My old rear projection TV finally broke; and what a perfect opportunity to rebuild the entire HT set up. A few things have changed since my original set up 7 years ago. Component cables are no longer the most superior cabling standard and there are a few new audio formats. I am now running with the following set-up. -Sony 51" Bravia Z -Bose 5.1 speakers (Accoustimas 10 series iv)-Sony BluRay Player BDP-S350 -PS3 -HD PVR -Sony HDD/DVD RDR-HX750 -old Yamaha Receiver RX-V730 Any HDMI components are connected directly to the TV. This allows the non-techies to enjoy TV & Sound without turning on the receiver. For the occasional home theatre sound, i have used Coaxial and Optical cables between devices and receiver. My questions are as follows: 1. If my Blu Ray player decodes DTS-HD and Dolby TrueHD, does it matter that my Yamaha receiver only recognizes the older formats? 2. Are the optical/coaxial connections sufficient for carrying the newer HD audio formats to the receiver? 3. Do I really need to replace my receiver and if so, can you recommend something mid-range that would suit my Bose speakers? 4. Should that new receiver push high wattage because the speakers are capable of 200 watts per channel?