GTA:CW is really good. Random violence isn't as much fun as in the major GTA titles, but driving fast like a big crazy man is still exciting (be sure to turn up Vehicle Camera Look-Ahead though). The drug trade works quite a bit like most space-piratey-tradey games that I've designed; you can jack vans and steal their drugs or play the market yourself. It is easy to make disgusting wads of cash. I have been concentrating on only buying when there's a deal (weed and downers excluded as they're so inexpensive most of the time and the margin is so great on them), but definitely only selling when there's a deal. Selling when prices are normal is a big waste of time.
I feel like cops are more common in this game than in most other GTA titles, because about 60% of the time when I jack a car, the cops start chasing me. They always happen to be just a little bit off-screen. Not a huge deal as they're easy to evade.
My primary complaint with the game is that it requires three hands. Switching weapons requires hitting the touchscreen, as does throwing a molotov or grenade-type weapon. There are a lot of events in the game that are time-sensitive and will require you to whip out your stylus and start rubbing and twisting and poking. There's one particular mission where you're driving an ambulance and somebody in the back keeps dying, so you have to tap him in order to defib him back to life (and meanwhile you have three stars). I ended up using my thumbnail because it'd take too much time to switch to the stylus.
Also the game is still funny. Dark, as always, but funny.