You should get slapped for asking such a stupid question I'm just joking, but the cm690 is an awesome case. I am a very satisfied owner. In fact i went to home depot today to ask about cutting a window. I was looking at the acrylic pieces prices and i got my cutoff wheels
I am considering the 690 case also.It is larger I believe and has more room for expansion and can cool better due to all the fans you can add to it.It can probably rival the Antec 900 as far as cooling is concerned when fully fanned out.