As i have posted earlier,I am putting a system together for a friend and will be ordering the M60TI,VP150,QS4 and EP175.My question is; Being that the EP175 cost $550.00,can I get a better Sub for that price or stick with the EP175.The limit on the budget has been met,so $550 is about all that can be spent.The room is 16x16x7 and the system will be used 50/50 music and movies.Keep in mind that if I don't buy the Axiom sub I lose the 5% package discount.Any and all suggestions will be greatly appreciated.