Agreed about the M60 - once you start shooting, you cannot aim at all. It is just a 'spray and pray' kind of weapon, but as you say, it is immensely fun. Was jumping out from around corners last night and just letting rip at close range, so was a reasonably effective gun then.
I reckon the MP5 is pretty accurate too, and has the advantage of being silent, so you can sometimes pick people off without them knowing where you are. Does seem to go through ammo real quick though.
Nicktrix: 70 NightElf Hunter, skinner/leatherworker.