I never played any online Gears 2, just the campaign and a bit of local Horde mode. Last night I stayed up until 4:30 am with 3 friends trying to get past level 20 on insane on the same map. It was freakin' annoying but so much fun. I'm planning on getting a few MP games under my belt to try and get a swing going on in time for the beta.
@StarkvsRogers, how have your friends already got access? The early launch doesn't happen till the 18th. Also, I was under the impression Gears 3 was changed quite dramatically, sped up a bit and completely different deathmatch mode?