I have the 2.66 GHz MBP and because I've had problems since the beginning this was going to be my 4th replacement. I called Apple and said I'm not happy and if they could upgrade me to the 2.93 GHz? The offered me: A replacement 2.66 GHz with £130 refund A chance to upgrade to the 2.93 GHz but I'd have to pay £60 (£150 saving). I went with the 2.66 and £130 refund. Do you think I made the right choice or I should've got the 2.93GHz? It's not even a huge difference in speed is it?