Ok so I'm about to make my big leap into HDTV hopefully soon. My current setup is a 27" JVC tube tv with a Sony NS400D DVD player. I realize I'll have to get a new DVD player to take advantage of newer picture technology. How is the Sony DVP-NS975V? Also, I'm looking at both the Sony KDF-55WF655 and the Sony KDF-55XS955 models. Other than the XS having 1 more HDMI input, what are the major differences between the 2 that would warrant $400 more? For HDTV, I was going to get the Cable card through Comcast. What are your impressions of Cablecard (if you have it)? Lastly, I have both a Tweeter and Best Buy near me. In your own experiences which of the two would be a better choice in terms of service and warranty. Thank you for your time and assistance.