In trying to figure out which receiver to buy, I have been very interested in the Yamaha rx-v2600 that includes HDMI upconverson, as well as "upscaling", versus the rx-v 2500 that is virtually identical except for the upconversion and upscaling. In perusing several different forums to gain additional info about upconversion and upscaling, I have found myself somewhat confused. I don't understand exactly what upscaling is and how it differs from upconversion. Also, my new HDTV on order--Sansung HL-R7178 has a native resolution of 1080p, and apparently is able to either upconvert or upscale. In the forums mention has been made that if the tv is going to upconvert (or was it upscale?), the receiver does not need to be able to do it, and that the chip for doing so is likely to be better in the tv than the receiver anyhow. But upon looking at the Samsung online manual there is not enough information to decipher the details of how and when the tv exerts its upconversion. And finally, one sv2600 owner was touting,I believe, the 2600's ability to improve the picture quality of standad def tv, by virtue of the "upscaling". So can anyone enlighten me a little more re upconversion versus upscaling, and whether I should be leaning toward the 2600 or the 2500, given that the Samsung tv itslef appparently can do one or the other, or both. Thanks in advance