It's not perfect, but it's better than Source. It feels a lot more solid in general, but you can tell many aspects have been consolized (not necessarily in terms of gameplay, but UI elements, menus and so on).
I like that they're trying to make more guns more viable to use than just the usual suspects, and I really love some of the new stuff like the decoy grenade. One thing I'm not a massive fan of is that they dumbed down some of the maps in a worse way. Aztec's revision - great. Nuke's revision? Ok, some of the subterranean stuff was a little redundant, but taking away the entire back entrance? Not a fan. I also hate how their matchmaking system works right now - it should at least allow me to specify what distance I want to search in, not randomly put me in servers thousands of miles away which give me 150-200 ping.
I've put 45 hours into it thus far and don't have any intention of stopping in the immediate future - it's CS, at the end of the day.