don't get pro 2s i know im gona get stick for saying it but ive praticaly writen my set of and ive only had them a year get burgtecs or profiles if you can afford them if not then i would say shimano
ive killed the free hub on mine and it keeps locking up ive changed all the bearings, pawls, pawl springs and yes the axel is strait basicaly ive mangaed to shag it gona get a saint to replcae it or a profile if i can get one cheap once ive saved up
as for the frount pro 2 yes its fine but having just built up my mates new saint on a 719 its just a diffrent legue of hub