I think 6 max is the best format for playing SnG poker games
. Because it's less people and you have fewer than 10 big blinds and find a decent hand, you might as well go all-in (unless it's a real monster and you want action), as you have nothing to lose. Similarly, if you're the big stack with any kind of a hand, you might as well force the short stack to commit. Because of this situation and the pace of a three-handed game, you will probably reach 1 on 1 play quite soon after making the money.