I have the NZXT Tempest - and I adore this case.
People compare it frequently to the Antec 900, and things of this nature. I'm extremely happy I went with it over the Antec 900 and similar cases.
For multiple reasons. One reason - it's nowhere near as popular. I HATE having a case I know a ton of other people have.
http://www.newegg.com/Product/Product.aspx?Item=N82E16811146047&Tpk=nzxt tempest
Two front 120mm intake fans, one side 120mm intake fan, one rear 120mm exhaust fan - and two 140mm top exhaust fans. Bottom mounted PSU, very sturdy, I/O panel on top - and while labeled as a mid-tower case, this thing is huge. I was able to very easily fit my HD4890 Toxic Edition with a full two, maybe three inches to spare before I run into my HD cage.
It's big, it's got fantastic airflow, and I've yet to encounter any problems with it. It arrived with one fan shorted out, but NZXT replaced it free of charge in less than a week.
Plus.
It's cheap.
Well worth it, IMO. Though I wouldn't necessarily advise going for this case if you're the type of builder who feels like they should be able to just rip things out of place. There are some reports of the front cover breaking some of it's plastic clasps when you take it off - but these people musn't have a clue. I've taken the front off multiple times in the few months that I've had it for various reasons, and never had any sign of weakness.
Treat it well, and it'll treat you well in return.