Wouldn't swap my late 2009 MBP for anything (well, maybe an new i7 model lol). I recently stopped using my older PC and currently just use my MBP, either downstairs on the sofa when browsing the net, hooked up to my plasma for watching video content or plugged in to my tablet, external monitor and hard drive for photo and video editing upstairs - until I get a dedicated editing machine. Oh and it comes with me whenever I travel too.
Fantastic machine. As to if it's better than a PC, personal choice really. I don't like to tinker and prefer the OSX interface and the trackpad is a work of art - so it was a no brainer for me.