I have to agree with the others - go with the new model, even if you lower the specs a bit. The new C2D versions have made adjustments for better cooling, faster clocked video, etc.. As others have noted. Overall, they're more refined. I originally bought a 15" MBP and then handed it down to the wife when I got the new C2D 2.33GHz model. Having both around here, I can say that the new one is a better unit. OTOH, we're still happy with the old model too and with the prices on the refurbs, it can be very tempting and a good deal.
If you have the budget for it, definitely get the new one though!
Exactly the input I was hoping for! Thanks guys!
Still undecided about a 128MB Vid vs. 256MB. I'm guessing that when someone comes out with some serious 64bit apps (i.e. games) I'll really take advantage of the latter.
I also just found out that I can get the .edu discount. Makes the 256Vid that much more in my price range.