I run a lot of negative expo. I always have and always will. On my RC8 I have it set at -50%. Most other cars Ive had I ran between -25 and -35%.
I use it on throttle and brake too same thing -50% on the RC8 and between -25 and -35% on the other cars Ive had.
So many times Ive had the argument about expo. I say try it out and if you dont like it dail it back out. Its on all the high end radios for a reason.