I bought my 13'' macbook at the start of the year and haven't had a single problem with it. My sister's pc though, has been to the repairman _4 times_ this year.
The best thing about macs is no viruses, so no virus protection software. But when you think about how much youre going to spend, remember buying microsoft office suite for mac (to get word, etc - couple of hundred), a hard drive as your "time machine" (worth it if the comp ever does break, all your stuff is backed up), a laptop case ($50AU), and any other software... I got the adobe student design suite as well for photoshop, bridge, indesign, etc.
oh and the search feature is amazing. no more getting the puppy/wizard/earth to help you find something you misplaced (plus it takes ages), just type it in the search box and it will find all documents that feature that particular word, with the most recent at the top. Very useful for when I name 5 pictures "abbey lee gorgeous tfs" and put them in all different spots haha.
overall thrilled with the mac, if you cant tell haha.