If you upgrade to Dish HD, you will DEFINITELY gain on upscaling on the Zenega box for the same SD channels you currently watch as they certain look much better through HDMI on Dish HD. If you have an AVR, you could connect an optical Audio or HDMI cable to the AVR to get better and more accurate stereo sound. I am not sure when will Dish TV start DD5.1.Well.. After reading alll the post.. I am quite confused if I should really pay extra for TS+HD or DISH HD
Currntly I am using DISH DTH with LG 2010 PLASMA which is 720P... and quality is quite fine....
TS+HD has other benefits like dual recording (its like having 2 connections and 2 PVRs), better customer service, DD5.1 (ONLY if you have an AVR) on HD channels. However SD channels are definitely a downgrade from your current Dish SD connection (as of now).