Currently got the iMac G5 isight model, and it pretty much does everything I want it to, usual fair of web, mail, word, excel etc etc But in general terms it feels a bit sluggish and clunky, slow startup, slow to launch apps... I use iphoto for my snaps but would like to get back into imovie etc but feel that the G5 while usable wont be a great experience. How much of a system improvement will I see from going from G5 to i3? Dont particularly want/need/afford i5 or i7 or 27" screen. Thinking the base model will be suitable for me. Many thanks in advance.