I bought one of these:
http://cgi.ebay.com/Black-Hard-Snap-...713.m153.l1262
It doesn't come with a belt clip. Actually, the hole for the belt clip isn't punched out like it's shown in the photo. The hole for the external antenna isn't punched out either. Compared to the Seidio case, there is a little less plastic around the sides, so more of the phone is exposed, but it's still protected. It has the same feel as the Seidio case. The plastic seems a little thinner so it might not be as durable. I've only had it a few days so I can't vouch for the quality (please don't yell at me if you get one and it breaks after a few days). It's a tighter fit than the Seidio case and you need to force it a little to get it all the way on. The seller also has blue and red cases for sale.