they are known to be more reliable, but they do sometimes break, harddrives, RAM are easy enough to change other bits are harder. You could buy apple care which covers you for 3 years.
BAsed on what, based on the fact that everyone you know has had acomputer, and they broke, if everyone had had a apple they all be complaiinig about them.. ffs
I would suggest you need the apple care cover, as there fecken expensive when they break (logic board, not memory or hdd), and go with the idea when it does break & it's not covered you buy a new one. Having taken one to bits for m8 to see if anything could be done, and then had him take it back to the apple approved repair shop. Logic (motherboard) board failure, [which I did diagnose for him] a nice £400 wasted on a 3 year old machine, but being as he's paid around £70 for the apple shop to tell him that, he felt oblided to have the repair.
If you don't believe me about failures, try a quick search on ebay for 'broken' mac's being sold for spare parts...
They use my PC at the moment and I have had to reinstall the O/S from scratch after they had been using it.
Then lock it down, give them their own accounts without admin rights & password protect your account, it's not rocket science.
My work PC has had 3 in 1 year and only deals with email and a few word docs and is professionally maintained. It crashes and freezes.
I'd suggest you kick you IT guys up the arse or allow them to buy decent machine in the first place, none of may machine (3 year leased) @ work need 'regular' rebuilds.
Don't get me wrong, i think they look and work brilliantly, but don't be sucked in to thinking they the answer to "life the universe and everything".