Black Ops I think is better, seeing more lighting/smoke effects, sound for pistols and SMG is worse though.
The stores are a bit of mish mash, but will get used to layout I guess.
The chat features - not really had any yet.
Spent about £20 more than what my Amazon order was in buying from Tesco's but did get Need For Speed Shift for £15.
The chatpad is very useful for getting all the passwords to various apps into the system.