Which tech reviewer should you watch before buying?

For phones sold in Korea and local purchase considerations, start with ITSub. For explicit pros, cons and measurements, try UNDERkg. For laptops and Macs compared with alternatives, try Dave2D. ITSub and UNDERkg speak Korean; Dave2D speaks English.

This guide compares subjects, language and review approach, not a ranking of trustworthiness. It retains the Korean article’s October 2026 examples and disclosure checks. Product names, prices and availability below describe those sources at the time, not current buying advice.

Compare format and frequency

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Reviewer · subscribers	Main subjects	Style and language	September uploads collected
ITSub · 2.84M	Phones, computers, accessories and household devices	Korean; experience and camera/performance often split	13 videos, 1 livestream, 8 Shorts
UNDERkg · 819K	Phones, including overseas models, earbuds and watches	Korean; measurements and a conclusion at the start of the description	12 videos
Dave2D · 3.69M	Laptops, Macs, phones and gaming devices	English; concise comparisons with alternatives	4 videos

Subscriber counts were displayed on October 25, 2026 and do not establish reliability. Upload counts cover September 1–30 KST in INFLFEED’s collected feed. Long videos were compared with channel listings; Shorts were counted only from collected records. This suggests different viewing commitments, not an ongoing publication promise.

Caption checks on October 25 found creator-supplied Korean captions in all nine UNDERkg videos examined, and only English automatic captions in all seven Dave2D examples. ITSub’s Korean captions were mostly automatic. English captions for the Korean sources were not established.

Check each description for commercial relationships. ITSub’s two iPhone Duo reviews disclosed an Apple loan; the October 15 Bose video disclosed paid advertising, and a September 30 livestream credited OpenAI with production and account assistance. UNDERkg’s September 17 projector review disclosed payment from XGIMI. The Bose and projector pages also displayed YouTube’s paid-promotion label. The Duo descriptions and transcripts did not establish whether UNDERkg and Dave2D bought or borrowed their units.

ITSub — include the conditions of buying in Korea

ITSub’s split reviews can help Korean buyers examine use, camera and performance separately, including eSIM-transfer procedures and AppleCare+ costs mentioned in the selected example.

The October 15 Bose review disclosed paid advertising. In the October 19 rice-cooker video, ITSub said he bought the KRW 688,000 device and compared the rice with his existing cooker.

Public reactions differ. An April 2026 Clien reader valued criticism of a Samsung product despite advertiser relationships. A November 2025 Meeco discussion placed the channel in a more audience-friendly, shopping-show-like category; the author later clarified that the post was not intended as an attack on ITSub. These are individual assessments.

A separate historical episode occurred in 2021: ITSub announced cancellation of a Galaxy Z Fold3 sponsorship over disagreement and said he would buy the device for an independent review. Contemporaneous reporting described both praise and criticism that the announcement exposed Samsung and other reviewers to unfair blame. That event does not prove the status of later reviews.

UNDERkg — start with a clear verdict, then inspect the basis

UNDERkg covers phones not officially sold in Korea as well as domestic releases. The October 16 tuna-can-shaped power-bank review praised the design while criticizing performance relative to the KRW 46,600 early-bird price. The October 20 Fold8 long-term review praised casual usability but strongly criticized the punch-hole camera position.

A 2021 Meeco reader appreciated direct advice to avoid poor products. The 2025 comparison discussion labelled UNDERkg analytical, while a prominent reply disputed that characterization. A 2024 thread criticized delayed iPhone 15 reviews. These reactions show disagreement rather than a settled reliability score.

For historical context, the team issued a 2015 apology concerning, among other matters, a staff member promoting the site without disclosing their affiliation. It is an eleven-year-old event in this article’s source window, not an allegation about the selected 2026 videos.

Dave2D — compare a device with the alternatives

Dave2D is useful for English-speaking viewers considering laptops or Macs by budget and task. Prices discussed in the videos are generally in US dollars; local offers need a separate check.

In the seven-minute September 21 Mac mini review, he replaced a Mac Studio in his production setup and tried switching four live camera feeds. The October 6 Googlebook review praised hardware but argued that the application ecosystem was not ready for someone expecting Windows- or macOS-level apps.

A 2021 recommendation in The Edge Malaysia praised attention to decisions beyond specifications. A March 2026 Hacker News comment urged caution about early reviews depending on manufacturer access, while acknowledging Dave2D’s willingness to criticize. Neither is a representative viewer survey.

The same iPhone Duo, three questions

The original article’s launch reporting placed Korean preorders on October 16 and release on October 23; price reporting stated a starting price of KRW 3.29 million. The following comparison concerns reviews published October 21–23, not independently reproduced product tests.

ITSub asks how it fits Korean use. His October 21, 21:00 KST week-of-use review compared design, hinge, reflection and crease with Fold8. He discussed eSIM migration and AppleCare+ costing over KRW 500,000. A separate 21-minute camera/performance review followed two days later. At 20:27, he considered it more relevant to people already combining a phone with a small tablet, while suggesting others could wait for app optimization. Both reviews disclosed an Apple loan.

UNDERkg compares measurements and sustained performance. The 26-minute review, published October 23 at 22:51, reported external-display reflectance of 3% versus Fold8’s 4.2%, and internal reflectance of 4.9% versus 3.3%. Those are the reviewer’s figures. His sustained-performance test put Duo below the same-chip iPhone 18 Pro Max in how quickly scores declined, but ahead of Fold8 and Xiaomi 18 Fold in endurance. His summary praised software ideas and qualified the internal display’s outdoor usability and left-handed experience.

Dave2D questions the prescribed interaction. His 16-minute October 21, 22:40 review examined right-side dock and button placement against Fold8 and iPhone 18 Pro Max. He found it initially awkward but smoother with familiarity, criticized left-handed use and still rated it highly among foldables he had tried. At 15:42, he encouraged judging a foldable through actual use and budget fit. That opinion is not a guarantee of return rights or suitability.

Choose the question that matters to you: local ownership conditions, a measurement, or the interaction itself. For another category, compare game reviewers’ detailed explanations and short first impressions.