hey all, I'm going to be buying a 2011 iMac as soon as the free iPod offer starts again (usually at the end of May, as you all know!) but I can't decide whether to spend the money upgrading to the i5 processor. It'll be the first quad core processor I've had (best I've used before that is the dual core i5 2.3GHz on my 2011 MBP) so I'm not really 100%. I've put up with a Core 2 Duo 1.8GHz on my desktop PC for the past 4 years, but really want something quicker. I do the occasional graphic design and web editing using Adobe CS5 products, but most just use my computers for regular web browsing and document creation/editing etc. So my basic question is, is it really worth spending the extra £140 on upgrading the processor, or will I be more than happy with the i5? I'll be getting the 21.5" 2011 2.7GHz (or 2.8GHz if I go for the i7 option) iMac. Thanks in advance!