I've never had problems with stock cars on trackdays.. even on testdays (Nordschleife) they usually cope with the abuse very well.. if your brakes are catching fire in 2 laps time.. then you're probably doing something wrong heh.
FWD's are less uhmm.. interesting compared to RWD. I was gonna say less "challenging" but that's not totally true. I personally think it takes skill to drive a FWD on the very limit. I like it how one can use the rear end to rotate the car and balance on the throttle.. it's nice. People who claim all they get is understeer, I'm sorry to say but maybe you should learn how to drive properly. There's more to it then just turning the wheel and pushing the loud pedal all the way down. They sure can be very rewarding, but like I said, it can take some dare-pills and skill to get to that level.
I was going to disagree with Tristan as usual (lol sorry) but in the end I agree with him, I think he explains it very good in his last post.
Oh well, another useless reply. I'm sorry.