Generally i use either Lucas/Ness, captain falcon, or lucario. Captain falcon for fun 1v1s, lucas/ness if im being mean in 1v1. Lucario for every group smash, because all of his B moves are uber useful. Lotta guys just out of range? Wombo combo with a side-B. gonna get hit bad? Down-B counterattack. Need a quick escape? Up and out B for damage and distance. Plain B before entering combat to have an aura sphere ready at anytime to surprise your foe.