Hmm, I think I would rather have a new one.
Simply because that way I can keep it for longer and I'll have some kind of warranty.
I looked a bit at an ASUS ProArt Series PA246Q and that seems pretty neat. I think it's a pretty good ips for not a tremendous amount of money (~499USD). It's also 1200p which is nice for programming where width matters less.
Anyone have experience with that or have any other suggestions?
Seriously, for $500, you're pretty much stuck between a $300-$400 24" eIPS/IPS display (ie: Dell U2412hm/U2410) at 1920x1200 (which is *not* 1200p, but is rather, WUXGA), or the $600-$700 27" 2560x1440 IPS displays (ie: Dell U2711, and similar from HP, etc.).
For programming, too bad you weren't looking a few weeks ago, a Mark77 on Redflagdeals had almost brand new U2410's at $200 a piece shipped anywhere in Canada.
Personally I highly recommend that you stick with IPS or eIPS for text-based stuff, unless you can tolerate the TN panels. I personally have a pair of 24" U2410's -- whether I'd prefer a single 27" or 30", is hard to know.
As other mentioned above, i am currently using the Asus ProART PA264Q and gotta say its amazing. I've had the Dell U2410 and the Asus blows it out of the water. It has some minor exterior flaws with the red line, HDMI logos and some other unneccesary things, but for the display itself its a must for under 500 red ones. The viewing angle is amazinng, comes precalibrated out of the box (there is still room for perfection) but i got it for 499 and overall really happy with it. Plus the res is 1920-1200. :D Thumbs