I've heard and seen that Coolermaster cases are pretty good. Thermaltake looks okay. I really don't have a great idea of what case to get. I really learned my lesson with letting someone else (cough, my mom) pick me up a case. I'm currently using this: my case It is the second one down on the left column.
I just think its too cramped, its a midtower. I'm going to be selling it if I can get a new case for a decent price. I will be posting this in "For Sale" as well.