I'd also recommend a look in an Apple store mate, I've had a macbook pro for around a year and a half, before that an intel imac for just over four years (which still is going strong). I have had to use Windows systems during this time and also used them solely before using Apple stuff.
Is a macbook pro or any other mac product invincible to issue? - Nope.
They do crash, lock and freezes, but in my experience significantly less than any windows based system that I've used in the last ten years.
However, my experience comes not from an IT view point but from the photo editing, music reproduction/recording and video editing.
For these purposes I'd always rely on a mac rather than a windows based system.
Honestly speaking, so far in the four plus years of my intel imacs life, it's crashed as many times as I have fingers on one hand.
Each time I was rendering immensely large video files in final cut pro. :bang:
In the 1.5 years I've had the MBP, it's locked up countless amounts of times warranting a hard reset. The performance when running say CS4, Lightroom, mail, safari, Transmit (FTP client), Tweetdeck & Skype altogether can be very poor.
One at a time it's not too bad but when meeting the usual requirements out and about I need them all running minus Tweetdeck of course
Sometimes I have to deal with PSD's that are around the 3GB region which exerts a fair strain on the 2.4GHz duo core and 4GB mem, if poss I'd go for a much more capable spec if your intending on putting it through it's paces.
For the above criteria, my experience and resulting opinion is that Windows based systems have a shorter life span and also are higher maintenance.
If your looking for something to manage and edit photo's, the usual clerical and net stuff then my moneys goes with Apple.