I am enjoying my Killing Floor experience. Right now I have made it to Level 5 Sharpshooter and Level 4 Commando.
I also started playing several other games (MW3, BlackOps, L4D2, NMRiH), and I enjoy the mix. For me it is about variety right now so I don't get bored with just one game. I am looking forward to our clan upgrade to UrT 4.2 in the next 30 days. That will add to the variety.