Jonny Guru rated the new Thermaltake 775tx actually better than the Corsair XT line, in terms of actual functioanlity. http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story5&reid=182
The only place they found a fault was in the butt ugly appearance =p
edit: The toughpower line and Corsair 750/850TX are actually both made by Channel Wells and rebranded respectively.
I've got rigs using HAF 922 and Element G. I've also built rigs for others using 902, 900 and 1200's. All those cases are great.
The Element G does offer more features and similar quality as the 902 though, which given it's current cost, makes it a better buy IMO. Looks, though is completely subjective ^^