Sub 24", I can't think of anything non-TN other than the 2209WA, that would suit your needs. You're undoubtedly coming from a TN, so you could probably save a few dollars and just grab whatever Acer/Asus tickles your fancy and be fine, but if you could afford a pair of those Dells you'd be sitting very good.
Canon 6D||[24-105/4L IS USM|100/2.8L Macro IS USM|70-300/4-5.6 IS USM|40/2.8 STM|50/1.4 USM|85/1.8 USM|Samyang/Bower 14/2.8 Full-Manual Rectilinear Wide-angle|
Canon EOS-M|11-22/4-5.6 IS STM|22/2 STM|EF-M 18-55/3.5-5.6 IS STM|
For sale!|24/2.8 IS USM|