I've been watching for a few days now and the PQ is amazing. I haven't noticed a difference in AQ. One thing however is that in advertisements or shows that seem to have been filmed in 4:3 letterbox, they are not showing the black bars on the sides and instead stretching the image to make it upscaled and anamorphic. It's rather noticeable. Otherwise, I have no issues with it. It's a great first step by DISH and ZEE TV.
Personally I think it would be to DISH's benefit if it could maintain exclusivity of the HD feed for a while. My friends who subscribe to the channel on other service providers are jealous of my HD feed. DISH has already established itself as the leader in South Asian television programming and offers the most comprehensive package of channels so it makes sense that it is the first provider to provide an HD feed in the US. I really hope it can bring on the HD feeds for the other South Asian programming networks in the near future (Sony Entertainment Television, Aapka Colors, StarPlus India, Life OK), whilst maintaining the economically priced packages. It would also force subscribers who currently only have an International programming subscription and are interested in the HD feeds to upgrade to a qualifying HD programming pack such as Dish America or Americas Top.