Quote Originally Posted by Roth_Trailfinder View Post
The reason I recommend it is not efficiency. The reason I recommend it is variety.
If you aren't going for efficiency, you can also throw Feast, Hunts, Raids and PotD in there :P

Expert, Trial and 50s roulette have a similar tome/time efficiency as Aethero/60s, so if you only have a limited amount of time, they are good equivalent options for variety without hurting your efficiency. Leveling and Frontline are plain worse (unless you get a primal for leveling). Hence, I wouldn't recommend them for farming.