I want a new computer but can't decide. Well i can decide but space is an issue. I live in the dorms and can't decide what to get. My desk its 43 inches by 24 inches. I can't decide between a 24" iMac or a mac pro with a 20" ACD. I plan on doing video editing, basic stuff. You think i should get a 20" imac. You think if i got the 24" imac it would be too big? If i put the mac pro on the floor to the left of my desk it will have problems with heat? This is my setup now, what do you think i should do.