Here's the monitor I ended up getting: http://www.ebay.com/itm/130933197737?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649
The best sellers seem to be accessorieswhole, green-sum, and dream-seller.
It seems like ebay is the way to go with these. These guys sell tons of them through ebay, the feedback is typically good, and they offer good return policies (not sure how good they would be in practice). I didn't get one that was "pixel perfect" because I couldn't find the model I wanted advertised like that. I haven't found any dead pixels yet, so I guess I got lucky, or the risk is overblown.
The most important thing is to get one with displayport (dport or DP). Otherwise, you have to get a shitty $100 adapter from apple. Other than that, choose matte or glossy and find the best deal you can get. The Qnix was the only reasonably priced one I found that was matte and offered a version with a displayport. Read the descriptions carefully because there are sometimes a few models of each brand.
You can goo