I love PLO right now. Holdem is ok but for online it lends itself to donkery too much. Any donk can shove all in preflop and the five community cards work to improve his crappy starting hand into donk magic to beat my legit hand.
In PLO, no one can shove preflop and they have to know and use at least a little bit of common sense in order to play and make a decent hand most of the time. Donks can still donk but at least it's much harder for them to do so.