Is there a better way to level?

DGP, suck it up.

Kaisers suck at training if that makes you feel better.

the nerfed aliens are better exp than that, and you need to keep in mind that EXP reduction is not only past level 150, its also counting if you are more than 20 below the mobs level. This means he need level 94 for no reduction and at level 87 its about 40% reduction. Aliens were knocked up to 105 afaik so that would be the same exp as DGP & no reduction included. However yes, once you reach level 94 its probably better at DGP to level 100 for evo world.