Join, wait, or just don't

[madhat]

I'm a sophomore thinking of joining a frat once the winter semester starts. There are three frats at my school Lambda Chi Alpha, Tau Kappa Epsilon, and Alpha Sigma Phi. My problem though is that I might transfer after my second year at my college. So should I wait until my third year then join once I'm at the school I want to go to which has way more frats but starting out as a junior, join a frat now then transfer (I heard when you join a frat and you go somewhere else you can stay at other chapters but I just heard that somewhere a while ago so I have absolutely no idea if that's true or not), or should I just not join a frat now if I hit my junior status? If you say I should join and transfer what frat would you recommend to join?