You're joking right? Your blackbook was replaced 3 times finally to a Macbook Pro, and now that is dead and you're actually going to drop another $2000 on an Apple product? Wow, you must really be loyal.
Well there is the issue that if you really like the OSX you're kinda stuck (I think some one mentioned installing OSX on a PC but how hard is that to do for your average user?).
I have to admit, quality wise I'm not impressed with my macbook which interesting enough is pretty much the same design as the guy's macbook you are talking about (for one every single macbook of my style I've seen has the palm rest plastic cracked. My friend had his keyboard replaced and the new top case cracked once again in the same place. Seems pretty much a defect when it happens every single time). I mean the hard drive died after a year (I know, you say hard drives can be finicky, but even for a hard drive I feel a year is a pretty short time). The fan is going out on it now, the mouse button is all weird on mine. I had to glue back together the plug that slides into the power converter (or pay 70 bux for a new power converter since they don't sell the plug seperately). I've never had so many things break within 3 years on any previous mac (The only other time I have had a Mac have something break in less than *five* years was the hard drive on my Performa and that at least took three years. The Performa had seperate issues, hardware bugs they fixed in the very next model).
And it's the first time I have felt that my computer needs a complete wipe and re-install when I'm not running Windows (that's more of a software thing I suppose or maybe a Mac finally got popular enough that there is more crap that one can "accidentally" download and lag up their computer).
Shoot, my G4 still has yet to have any issues and it's something like 10 years old and mostly used as a tabletop these days (I was using it when the hard drive died on this macbook and shocked it still ran fine). And the keyboard from the G4 still works great (it's been my main keyboard since I got the G4, even using it on the PC and with my macbook when I have it plugged into my monitor, which is most of the time). And I am not nice on my keyboards (something I've always said, Mac makes quite durable keyboards).
I really hope the Macbook Pros are better made than this thing was. Though I have to admit I like the ergonomics of this computer. It was well thought out (The magnetic "latch", the magnetic plug, how thin it is, shape). I just wish it was a little longer lasting.