Firstly, a premium case is definitely worth it. You don't have to worry about banging/forcing things into place, cutting yourself, and having silly design based clearance issues.
Secondly, I can put a full recommendation on the Lancool K62. Out of the cases I've built in so far, this was by far the most kickass case to work with. Quiet fans, great cooling, great design, easy installation of components, and overall a good looking, well built case.
My previous cases I've done a build in are:
-Coolermaster CM 690
-Antec Sonata III
-Some el-cheapo "SHAW" case (Never again will I use a rubber mallet to build a computer)
-Lian Li PC-60FN
The Lancool K62 was the best of them in my opinion (with the PC-60 a close 2nd).
Fractal Design R3||2500K @4.3ghz|CM 212+|16GB|500GB Seagate XT Hybrid + 2TB|2GB 6950|P8P67LE|HX-650|2*U2311H||
HP 6930p||T9400|4GB|160GB@7200|1400*900 14.1"|All usual laptop crap||