I simply cannot in my wildest dreams imagine getting an i7 setup. Not now. Not anytime soon. It's worse enough that I bought an 8gb flash drive on NewEgg and 2 weeks later it's 7.50 cheaper. I can't imagine dumping a couple hundred on a setup and BAM, that quick everything is dirt cheap.
Now, of course that puts you in a tough position if you "need" to upgrade. Do you bite the bullet, upgrade, and become future proof for a longer period of time? Or do you get something cheaper and nearing the end of its prime?
I upgraded. I got a 775 setup. I'm verrrrry happy. But I upgraded with the assumption in the back of my head that I would upgrade to an i7 setup in a year or so, when the bugs and kinks are worked out and the sucker isn't sky high in prices.
The choice is yours. The money is yours. But ultimately, you have to decide whether or not if it's worth it.