In fact if we see the scenario till date, its dishtv who is real champ, as it has more regional channels, even more tamil and malayalam channels then SUN dth for south market, evem in north they have almost all the channels apart from some newly launched channels...and also more economical then other as well. in hardware and in subscription.
Sorry i do not agree with you, Dish has not added any new channels apart from the channels which it receives from DD. I think because of the fight with BCCI its not ready to add NEO channels. TS has added more channels recently than dish( charging extra, thats another issue) Dish is no where in TN when u compare with Sun DTH. Sun DTH caters all in South and people interested in South Indian languages.