Ok, here's the deal I got $400 and I limited my search for an HTS to the Kenwood HTB-505. Then I hear about the Onkyo ht-s650, which from what I hear is greatly superior to the Kenwood HTB-505. Is it really worth saving another $150 to get HT-s650 and if so why? Is the sound superior (with supplied speakers) or is it the features? Also, I would like to know is it a better deal to buy a refurbished Onkyo ht-s650? If so what is the lifespan of a new system vs. a refurbished sytem?