For me I prefer PLO8 -- both cash and tournaments.
at low stakes many sites have a culture where everyone limps into every pot and hopes to see what the flop brings.
You can work this to your advantage by raising premium
hands pre, and usually you can get a multitude of callers. You still need to hit the board well of course, because in such an environment no-one folds.
A PLO8 hand needs to have a strong low component, since 60% of all boards have 3 cards <= 8, so usually a low hand exists. As a prev poster mentioned, getting 3/4 of the pot is a plus -- so is scooping it!
If you're pretty sure you're going to split the pot, don't pump up the pot, since then both lose to rake -- not a problem in tournaments of course