Been playing it since day two, granted on the Eastern European 1 Server....
The Good: It does what SimCity does right, with a mixture of elements from The Sims 3, and some of its own tweaks and innovations. It has run very smoothly and i have played close to 12 hours on quite a few occasions. They have tripled, and quadrupled servers and service is getting better day by day, it should be noted that once that happens, they plan to put the features back in, so who knows if that'll crash the servers again. Also i have gotten a game going on North America West 3's server, so i can finally play in my country as well! Setting some of my games to private is also really fun, as i can be god over up to 16 cities!
The Bad: I have only been able to play in the North American Region servers once, so my main games are on Eastern European 1, and since they are mostly six hours ahead of me or more, i play four different games on that server. Server browser is stupidly placed in the launcher instead of the game, thus causing mass confusion to people not looking for a server browser and just want to play the damn game. In Sandbox mode there are only like 5 cheats right now, The Sims 3 has at least 20 of them, making it the funner game right now. Disasters are locked behind getting achievements and that's by game and by server, so it becomes tedious to have fun laughing as disasters happen.
Overall Verdict: This game is pretty awesome, but the online server issues really put a sour taste in my mouth, however i believe in EA and Maxis, so they get 4 Stars for trying their best to give us a cool game with one fatal flaw.