I'm looking into buying an 8x10 late this summer. I am also going to buy a quality amplifyer, preferably more than 500 watts. My question is this. What are the pros and cons of having an 8x10 and a single ouput on the amplifyer vs. two 4x10's with a dual output amp. Also as a side question, does anyone know where a good store to play 8x10's (other than SWR's or Ampegs) is in the Seattle or Everett area? I wouldn't mind shopping around.