i5 2500k, 1155 mobo, Geforce GTX 570, 8GB GSkill Ripjaws (4GB x 2), 60GB SSD, 1TB Storage. easy, done
I can see your point, but were not really talking about much money with the new i7's if it was a 400 pound difference I would hold off. but for 50-100 quid... might as well.
The thing is, 100 more pounds will buy you a GTX 580 or bigger SSD. It's not a matter of being able to afford it; it's a matter of how the money would be best spent.