Hmm. My previous laptop was a DELL XPS 1330. It was an OK computer and I had it for a year. The graphics system carked itself just after the warranty expired (known fault in this model), but DELL sent a guy out to replace the logic board, which was pretty good of them, I thought.
Anyway, the point: I watched the guy pull apart the XPS. I have never seen such crappy assembly and quality in my whole life. Everything was plastic, everything. Thebase that held the logic board was so thin that I could easily bend it with one hand.
I then sold it on ebay for about 30% of what I paid a year ago, and bought a MBP 15" just to see what all the fuss was about.
Now, I've been a PC guy all my life, but I work as a developer on windows systems, so I thought it was time for a change. Boy, have I had my eyes opened. Without a doubt, this is the best engineered gadget I have ever seen. It does everything I want to do, with absolutely no fuss, no bother. Now, I know, my anecdote means little, but as I say, my eyes have been opened and I am firmly an Apple fan, not only for the excellent hardware, but the unbelievably good OSX (a real eye opener). Of course, YMMV, I am not trying to convince anyone, I really don't care what anyone else does. But I know I will be buying Apple from now on. Flame away!