Wish I had the problem of too many mods 
I have a few though. My Hana v3, an itaste vv v3, a nemesis clone, and a panzer clone. I use my kayfun on my Hana, my aerotank mega on my panzer (just finished building a .6 ohm parallel in it
), my nemi is my dripper mod, and my itaste vv v3 is my emergency backup, it's low wattage, but I have an aerotank mini on it so it works well 
I have a few though. My Hana v3, an itaste vv v3, a nemesis clone, and a panzer clone. I use my kayfun on my Hana, my aerotank mega on my panzer (just finished building a .6 ohm parallel in it