Only reason to even do roulettes now is for farming tomes at 90. Its a waste to use them for exp especially 70-90. Bozja hands down is faster than anything else and the most current level dungeon is nearly the same amount of exp as doing roulette, so if I'm gonna suffer through tam-tara I'm gonna get tomes out of it because its not worth it for the exp because the bonus exp is barely anything.