I've no issues at all w/ my Yamakasi 30" IPS ($300~400). Got it on ebay, straight from Korea, looks a lot like my old iMac's IPS but it's matte (and not 27"). 2560x1600 :). I've had it just a few months now, not quite a year. I've also got 3 thinkpads but I can't recommend those screens :(.

Also, if you haven't seen fonts on a glossy Retina display, visit an Apple store. Fonts at that resolution just look different/perfect in a way that's hard to express.