What 4k monitor should I buy? (~400)

Leaning towards the Samsung 32" one. It doesn't have IPS which isn't as good for my photo editing... but I use my computer for word processing and web browsing a lot more... so the extra size will mean that I can use the full resolution and still be able to read text.

How did you get these prices from bestbuy website? One of what you posted matches.

They were on sale yesterday. Sale is over.

edit: got the e-mail and my monitor is ready for in-store pick-up. I went with the 32" because I use the computer primarily for work and I wanted the extra size so that the text isn't super small at full res.

Samsung 32" 4K 60Hz 4ms GTG VA LED FreeSync Gaming Monitor (LU32J590UQNXZA) - Black
$449.99
Total Savings: $130.00
Quantity: 1
Total: $449.99

I just got another LG monitor, LG 27UD58, the same specs as the one in your list (27UD59P-B.AUS). It was on sale at newegg.ca at 330$ CAD with free shipping, got it locally at the same price after price-matching at Staples. I love the monitor - great colors and resolution (I do a lot of photo editing). It comes pre-calibrated (the calibration certificate included), but I recalbrated it using my colorimeter to match my other monitors. Only tilt adjustment, no height adjustment, so I ended up buying a very nice spring-loaded monitor arm on ebay (from Montreal) for 32$ (https://www.ebay.ca/itm/PrimeCables-Erg ... 2749.l2649) - it works very well with the monitor. It came with DP cable, and I was surprised that my pretty modest card Nvidia 1050 Ti did a decent job with a couple of 4k games I tried.

Since you put word processing and photo editing first, I'd suggest that in my experience a 4K monitor at 28" is almost unusable (for most people) at native resolution (3840x2160). Everything is just too damn small unless you're sitting 12" from it. That, for me, defeats the purpose of having a 4K monitor.

I tried the BenQ 32" 4K monitor (http://www.benq.ca/product/monitor/BL3201PH/) and found it to be superb in terms of quality and usability at native resolution.

But, if you don't mind scaling, which is a hit and miss with Windows anyway, then you'll be fine with the cheaper of the ones you suggested. I wouldn't concern myself with the FreeSync (since you're playing casual games) or high refresh rates.

Save a few bucks, and buy the cheapest 4K.

Of course, if you're doing photo-editing/re-touching professionally, I'd make sure you get one with a good color space coverage like 100% sRGB and (ideally) 100% Adobe RGB. Not sure where any of the ones you suggested stand in this regard.