My MacBook Pro is the best computer I've ever owned, barring none. It's the first time that I've ever bought a high-end computer. Even when I build PC's, I usually do it on the cheap. But this one, I wanted the best to really handle everything I wanted to do. I haven't been disappointed yet, in OS X or Windows.
But the thing has one problem... it gets hot. I mean toast your nuts hot. Like borderline third degree burn hot. Recently, someone ripped theirs apart and replaced the stock thermal paste with some good stuff and made it run far cooler. And it doesn't appear to be all that hard to disassemble a MacBook Pro. Of course, you void your warranty when you do it.
So the tweak monkey gadget geek in me says do it. It's very obviously a lot easier to take apart than my HP was. But if something does die on it in the first year, however unlikely, I can't just swap out most parts like I would a desktop.
Which reminds me, I still need to sell my Dell laptop.