Try them all, see how they all are run in that area. See how you get along with the people that play in those particular leagues, as well as what you think of their LO's. Maybe there is too much gamesmanship in one over the other for you, or maybe that is what you are looking for. Maybe the "sandbagging" actually exists and is prevalent in one of these, and maybe it isn't. Maybe there are poor sports in one rather than the other. Could be any number of factors that could affect how you enjoy your league night. Who knows. You will, if you check them all out!
Nice that you have the choice. That means plenty of opportunity to play.
(Now I'll sit back, and watch the anti-APA stuff come rolling in....)