2600k / 2700k would be ideal on a budget.
2500K as an interim will do also. But you'll basically save more by just going for a i7 straight away.
Yeah its what seems most appealing at the moment, I appreciate going straight for an i7 would save me money but I'm impatient and want more now lol
It might cost me more in the long run but upgrading in steps is probably the best for me at moment; G640 -> i5 -> i7.
But I will have a look and see how much i7's go for.