i doubt there is one best setup for any class, as you have to consider some different stiuations like farming (aka pure pve), pvp (also included when farming often), olympiad (against 8 different classes). in some of these cases you can choose jewels with lower def and bonuses that boost your class (like critical damage increase), in some you have to pay attention to your mdef, and in some (the hardest) you have to balance it, since in most cases you can't achieve these two goals at the same time (again critical damage increase - assuming that noone here is able to get tauti or trasken ring yet and only octavis' ring has high enough def, you need to decide whether u get aq or baium ring for additional boost or any other ring with higher mdef). it's kinda simple in case of olympiad and bit harder with "daily" setup, but still not hard to work it out.