My 25" Acer VW257 is 1920x1200, IPS , VGA/HDMI and 70Hz capable (max 75Hz) at up to native resolution with no frame-skip . It also supports VESA adaptive sync over HDMI . I did not measure input lag, but did not notice issues . Monitor has no issue displaying oddball resolutions over HDMI using OSSC . Monitor is very inexpensive. I got mine at less than 200 CAN$ with shipping and 15% sales tax included.
Main (potential)issues/caveats:
- 6-bit + FRC (not an issue for me so far)
- 640x400, 720x400 and 1280x800 are stretched horizontally to monitor width, even when preserve aspect ratio mode is set (obviously 4:3 resolutions like 1600x1200 or 640x480 are displayed at correcy aspect ratio).
There is also an Acer BW257 which seems quite similar with added Displayport and possibly other differences .
EDIT: I did not try calibrating the monitor as it seems accurate enough for retro gaming (passes eyeball test compared to Dell 2007FPB which did need significant adjustments ).