120 Hz is a huge deal. It makes every mouse move better, and that alone is worth it. It reduces the pain of using poorly designed software that adds extra frames of latency to everything. It makes it easier to track and read moving/scrolling content, and it reduces judder when playing low frame rate content (e.g. 24 Hz Hollywood movies).

I'm surprised the author doesn't mention backlight strobing, which is another huge upgrade. Kind of hard to describe to people who have never seen it though, as is the case with most of these improvements.

The second and third monitor recommended in the article have 4ms latency, so there's essentially no reason to buy them.

There are good 4k 120hz monitors with strobing for way less than the $2000 mentioned. E.g. the zisworks kit for Samsung U28H750 (first available already in 2017): http://www.zisworks.com/shop.html

Font are optimized for resolution they were designed for. Courier New is optimized for 800x600, and you can't have it on anything beyond 1024x768.

> I don't really think 120Hz is that big a deal

IMO 120 Hz monitors are overrated for pretty much everything except for FPS games (and similar fast-paced interactive titles).

I have a 144 Hz display and I would not want to go back to a 60 Hz display for gaming. At some point, my monitor changed to a 60 Hz refresh rate without telling me after some driver update. The first time I played Overwatch after that happened I could immediately tell that something was wrong, since the game just didn't feel as responsive and smooth as it usually does.

Another OW player in HN? :) I feel the same about the 144hz monitor I have, only really worth it for playing OW, the rest of the time is nice but I feel like I'm not getting enough out of it. Maybe next monitor I get will be 4k, but not sure for now.

After starting with 144 Hz monitor the difference to 60 Hz already with desktop mouse movements is so clear that it's immediately obvious if the refresh rate changed.

I get where he's coming from, but then again, that's not me. The cheapest monitor he recommends costs as much as my entire setup would cost in its current, used, state. I'm not gonna buy a single monitor for that price - and if i would, i wouldn't downscale it to the resolution [edit: real estate] i had before!