I ended up getting some decent designs off here for a good price ($795 award got me about 30 designs from 4-5 designers on a multi-page website). I ended up choosing them over CrowdSpring because CrowdSpring's 15% fee seemed high and there was lots of nickel and diming going on hawking upgrades. (to be fair 99Designs had some of this too though). 99Designs seems to have a big user base of designers as well and more traffic according to compete.com.