I'm liking it. The xp/points system seems to reward good co-op play more than previous versions. I'm not wild about the cover system, it just doesn't "feel right". Lots of instances where I didn't actually cover in the right spot, or while taking cover I couldn't lean out to shoot...even though i was clearly close enough to the edge.
Dunno, I like it but there's just something a bit "odd feeling". (that and I'm a huge Gears fanboy and it came out a week after GOW Judgement so I'm not spending as much time on it as I normally would.)
Strive for that moment when you're only a slice of pizza and a hooker away from paradise.