I got my MBP about a fortnight ago and I can say without a doubt it's the finest computer I've ever bought. Admittedly, it was a little more costly than other laptops in the same range, but to be honest, it's been worth it.
I use it as my main machine, and I make music, browse the internet, play games, etc, and have not been disappointed with it, except perhaps a little with Crysis, but that game challenges most computers anyway.
I think one of the most enjoyable parts of it so far that most people tend to miss when looking at it is OS X. I wanted to hook the MBP up to a TV yesterday to play a film and it took about 30 seconds to connect, set native resolutions, and reconfigure the primary monitor to be the TV. Very impressed. I've been a Windows user since 3.1 and I won't go back now.