Hey i'm getting a 27in imac. I need quick help deciding what is worthit for me to get. i7 or i5? What is better. I understand the i7 supports HT though will I really even use this? My family want the mac for general use, i.e facebook ect. I however will be using the computer for FCP studio and adobe CS5. I will be getting 8gb ram (4x2gb sticks).