I've been using an Acoustic 370 head for about 7 years now; it is killer and SO reliable I could probably play it in a rainstorm and not worry...it has many times run for 10 hours straight without any problems...I bought a backup(okay, it was free...)but it will likely never be needed. The cabs however are crazy; they made some nutty stuff...a former bandmate had a 4x15 cab, folded horn; kinda like an Ampeg 8x10 but taller and deeper...when we went to a minivan, it had to go...
Taylor, have you ever watched a Hartke cab die? the cab that bass player got after the Acoustic did; clearly those aluminum cones have a finite lifespan; I watched his cab go from one little crack in one cone to three shattered speakers in one practice...Tony.