If you want a giant case for stability and epic awesomeness,
get the Thermaltake Armor+http://www.newegg.com/Product/Product.aspx?Item=N82E16811133056&cm_re=Armor%2b-_-11-133-056-_-Product
its a bit out of your budget by $10 but I picked mine up for $120 after a rebate a while back. It has a lot of room and its a phenom!
or a HAF X or 932. like rolli said. Might I also reccommend the Antec 1200? Its very nice and i had it for a while but not my cup of tea.