Get any case that you want .. provided (a) you have a decent/good power supply and (b) some nice ventialtion then it shouldnt matter too much (outside of asthetics of course)
I'd reccommend the Chenming 601AEs as a very nice base-case
Zalman cases are specialty cases for people with special intentions etc (and they usually buy the mobo to fit the case rather than the other way around) ... for most cases out there that you can buy ... damn near any mobo should fit
