I have been building a home theature room for my friend, he had the bose lifestyle 5 system, and found out that the sub is bad. So since he is on a budget he wants to keep his double cube speakers, with stands. All I want to get for him is a Receiver and sub.. What is good out there that is fairly cheap.. Something with DTS. Also any good subs? Myself I got the 10" or 12" infinity sub which I think is AWESOME! let me know guys ! Thanks!