I would recommend IBM to anyone looking for reliability and endurance.
LOL, you are having a f**king laugh right? I've got an 8 week old Lenovo (IBM) laptop for work, the same as a few other people I work with… EVERY SINGLE ONE of them has had various issues, failing to work properly at all, generally being nothing more than a cheap, nasty looking paperweight. If you want reliability and backup service, buy yourself a Dell! Seriously…
I love my Mac, though some of the shine has started to wear off for me given the period I've had it now. OK, so if I'd bought a PC laptop 3.5 years ago, it'd be virtually useless now whereas my MBP is still pretty good, but I do take exception to the battery dying completely within about a week of the warranty running out (coincidence or just fate?), and I get increasingly annoyed at the price of any half decent software for a Mac still, bearing in mind that more and more these days you can get a decent free alternative for anything on a PC which you can't necessarily with a Mac. When I bought my Mac, much of the software I wanted to use you'd have had to pay for on a PC too, but these days there are way more free alternatives on a PC.
Still, at 3.5 years old all I've done is maxed the RAM out (which only cost me about £45 anyway) and fitted a bigger HD, and it's still about 90% as good/quick as a new MBP in terms of performance, and it doesn't have an annoying shiny screen or the new clicky trackpad! It's also had a LOT of use, and is still worth a fair chunk of what I paid for it new if I wanted to sell it now… Doesn't stop me from thinking I may be better off changing it for a new Mac Mini to use for anything productive, and a cheap netbook for just browsing sat in front of the TV…