My old MBP died, just a couple weeks short of its 6th birthday. I considered picking a PC laptop (to run Ubuntu), almost bought one but finally decided I'd rather put up the extra cash for another mac. The OS just suits my needs perfectly, all the linux command line tools for development and a nice stable UI for fun stuff.
Anyway, this thing is so damn fast. Moving from 1.5GB of RAM in my old laptop to 4GB in this one is a noticeable difference. I can't wait until the 16GB of RAM that I ordered gets here
The prices are actually cheaper than I expected, $1150 for the MBP and $150 for a 16GB RAM kit from newegg.
(Yes, I know 16GB is more than any regular user would ever use, but I have special plans for running some research demos with this.)