well i run a mac g4, old now about 4 years old, it runs panther osx, 1 gig of ram 867mhz processor. it has never buckled yet, obviously there are a lot more bigger and faster machines now but i have never upgraded simply because it never fails.
i have a sony vaio laptop, suppose to be the don gargon cost me about a grand and its pooh! keeps freezing, takes ages to boot up, it could probably do with cleaering out but all it is are simple small files.
i class the mac as a brute and the pc as a whimp!