OneWorld - You see the "enemy", you should attack and defend your position in the same time, you can increase your skill, 'cause you wanna beat him or you can only abuse his failing.
TT - boring, race alone, I always wanna falling sleep..
SK - same as OneWorld just without fixing...
Pit races - The best with little tactic
Long races is better, because you have much time to being better, overtake the front of your position, not only 2-3 mins.
But no1 can love same things xD
If you hate a fucking race mode, just leave what I do, or fuck every1 and delete all races in that mode //as Beer did (it was a bad decisions).