Looking at getting a powerful amp before jumping back into the mix, and I came across a used behringer BX 4210A for about 225$. The 450w, 2x10's, and tweeter caught my eye but the reviews say that the speakers are prone to blow and thats got me nervous. Something to do with cross wiring. Its been suggesed in reviews (and I've already been wanting a similar rig) to buy a 1x15 cab to go along with it and that will prevent speaker damage. So my question to the gurus is At the price is the amp truly worth it?