i know there are other threads on power but here it goes anyway. i am making my finial discions on a cab and head.i am looking at 2 2x10 avatar cabs or a 4x10 avatar cab (would there be any diffence in sound)and a gallien kruiger head but here is the deal. i am dealing with a loud ass drummer and a guitarist with a 100watt marshall head and a berrenger cab. how many watts should i get to keep up? http://www.musiciansfriend.com/srs7...0223794457/g=bass/search/detail/base_id/41784 that should be more than enough for small gigs or in auditoriums/halls?