So... suggestions? I'm willing to spend a few hundred on a decent, large IPS. I don't play competitively so 60 Hz and 5 ms. is probably OK.
5ms has become pretty average.

1 ms, 144 Hz, G-Sync, >32" would be more competitive. In general, I always find it better to shop based upon what
results I want, then balance the specs for that. For me, I primarily do SP games, so 60 Hz with deep, rich color temps is far more appealing than blazing FPS with instant response times.
For latency (5ms, 3ms, etc.) you'll be unlikely to notice any difference unless you're playing at 100+ FPS. So, someone really into Counterstrike or CoD might get some ghosting running at 1080p, on a big, G-Sync screen. You won't see any ghosting at 60-80 FPS, even with 10ms.
So what's your preference? Crisp image and blazing FPS? Or moderate FPS with higher detail, color range...maybe even 4K? No reason to invest in a 144 Hz G-Sync if you're unlikely to use it. No reason to purchase a 4K monitor if you're happy with a smaller screen. A 1080 ti would be a much more balanced purchase than a 2080 ti unless I intend to go for top-of-the-line everything.
Regardless, I can't recommend enough the importance of buying the best of the
prior generation of hardware if you're looking for ease of use. (I'm still using a 980 ti, and I've yet to see a game it can't handle. A 1080 ti would be an optimal buy for a GPU right now.)