i just finished carbon last night. Have to say after having completed need for speed underground 1 ,2 and most wanted, its a bit of a let down. The car choice is far too narrow and the game was too short.
Basically in most wanted you change your car quite a bit, to keep up with the pace. In Carbon there is tier 1, 2 and 3. And thats it. You choose a discipline (ie exotic, tuner or muscle) and theres only really 2 cars per tier of your chosen discipline. I went for tuner, and went from RX 8 to RX7 to Skyline. And used that up untill the very end when it just wasnt fast enough to beat darius. Handling was ramped up to the max, but the acceleration and top speed wasnt enough for the canyon run with no nitrous to give me that extra boost to keep up. Also the game was over so fast for me, because there is only 4 bosses to beat. In Most wanted theres 15. And the targets were more diverse. in Most wanted you had to win x races, get x bounty and x rep. It wasnt just win 3 races then go and beat the boss. You really had to work the freeplay mode to get on. In Carbon you can just play using the pre allocated races.
Also, i never personally went above Police level 2 in Carbon. You dont have to have massive battles with the police if you dont want to, but in most wanted you have to. You had to have so much bounty on your head with the police before you could progress. It was just unavoidable, and towards the end the police cars turn into corvettes, the chopper comes out, the spike strips come out, etc.. it gets heavy.
Seriously. play most wanted. Its by far the better game. Then play Carbon, the "canyon run" mode forces you to play without nitrous and you cant touch the edges as you fall off the cliff ! and they brought back drift mode from underground !
oh and tute. While we're posting screenshots of our NFS:Carbon cars. Heres the car i ended up with. Managed to overtake darius in the first run on the canyon run and ended it within about a minute ! They didnt have the 722 edition SLR. So i made one