i've read a couple of threads on the topic but i'm wondering, i've got a great deal on a scuba package but the shop is out of the xtx, he has some atx50's though. i don't need the gear for three weeks so i can either wait for him to get more xtx's or just take an atx now. i know the xtx allows you to switch sides, not sure if this is a feature i'll ever use/need, the shop owner said there was something else that was different, some piece that could be broken easier on an xtx than an atx but i didn't write it down.. what do you guys reccomend?