I have Tata Sky HD as primary connection and Sun Direct HD as secondary connection and believe me, despite having not so premium brand TV for secondary connection, I believe Sun Direct's picture quality is much better than Tata Sky, and difference is more noticeable on HD channels.
On infotainment channels, colours just pop up & u will definitely get mesmerised to see nature so vividly.
Add to that good channels navigation, subtle Sun Direct logo and perfect Dolby Digital audio feed to home theatre and u will never regret to be Sun Direct subscriber.
Now I have more English movies and infotainment channels on Sun Direct than on Tata Sky.
My humble request to Tata Sky, change that irritating logo and make it more transparent or invisible and move all service channels to one place so that they will not irritate viewer while surfing channels.