Both cases are within $5 of eachother ($104 vs $109) and they both have really good offerings. I'm kind of liking the look of the Thermaltake better, I also love the two external hard drive docs and the fact that it has a USB 3.0 port on the front (which will help with futureproofing the case). The Antec 902 has fan control switches built in, has removable storage block, and what looks like better overall cooling. I believe both also have support for water cooling (grommits and stuff) which will be nice if I have the need to WC in the future.
Any thoughts as to which is going to serve me better in the long run and right now?
(If it makes a difference I'm looking at running an i5-760 (or an i7-950), and I plan to use 1 NVIDIA 760 with the possibility of running another in SLI in the future - although I would look at Radeons if suggested)