I would say that it is the best CONSOLE controller ever designed, and then say the best gaming controller is a mouse and a keyboard. You just can't get anywhere near the precision or flexibility of the good old KB/M.
I've played a bit more multiplayer, and I'm noticing that there isn't much sniping going on. It seems like MW2 was much friendlier towards snipers. In Black Ops it's very difficult to snipe without getting butt-raped by rushers with SMGs or ARs. Not much good cover... in MW2 you could actually hide in tall grass and such and most people would not see you, if you played it smart (and used the right perks). Some of the maps were also larger, or maybe just more open. Doesn't bother me terribly, I just use an AR all the time, but it's something I noticed.
The spawn system is hilarious, especially on Nuketown. What a terrible map. Sit in a corner and wait for the enemies to spawn right next to you so you can rape them.
What guns/loadouts are you all liking? I'm running a FAMAS with silencer + red dot at the moment, with Ghost/Warlord/Ninja perks.