the gsr won't be any different than typical tuner cars, but it will deliver reliability with quite a bit of fun. like others have said, it would be a bit faster in a straight line (though you'd have to wind it out everytime) but when the corners come the MSP sticks better no doubt. It depends what you want to do...keep it stock or put money into it. Both cars have roads to go down when modifying, you aren't gonna make much power in the gsr unless you put lots of money into it (or you swap) and the same goes for the MSP, it'll take a decent amount of money to make more power, although it may be cheaper due to the fact that it's a turbo car to begin with.