Consider this guy: http://www.newegg.com/Product/Product.aspx?Item=N82E16811139001
It has rave reviews.
Check out the Antec Three Hundred. It's not flashy or anything but it's highly functional. I have an SLI system (also multiple HDD, and a mild OC running) and it's enough to keep everything quite cool.
Honestly, all of those seem like excellent cases and I'm sure you can get them all to cool your system effectively. At this point, you can pretty much decide based on how you want it to look.