I am currenty using BIC 62CLR as main left, right, center and JBL N24 as surround, powered by Sony DA5ES. This set up was good enough for me when I was living in small aprtment, but since I moved into my own house I think I'll need larger speakers as my mains. I am currently looking at JBL S310II or Axiom M40 as my budget is abouth $450. Which do you think is the better speaker for money? My living room is about 18 X 24. Please help me with your advise. Thank you.