Wed Mar 05, 2014 1:48 am by Ryeballs
Poison Leaves, Massive Boulder, Fire Blast, Mind Bending gives you the widest elemental advantage cross section in the game which is great for regular levels. Generally speaking you do roughly the same damage with Mind Bending, higher MATK and STAB as you do with a 90 Power physical move against a non-advantageous element (Razor Leaves against plant for example).
Iajutsu would theoretically be a good option if you wanted to drop an elemental move, it will probably be used over Mind Bending against bosses etc for extra damage. You might also consider something like High Speed to get the drop on your enemies or an upgraded Meditation (or whatever it is that boost DEF/MDEF) to tank the hits.
Generally speaking, 120 Power moves are simply not worth it as the negative effects can't be countered on your monster.