Eventhough Tatasky is expensive,go with it,if you can afford it.I won't recommend you to go with Videocon D2H right now as it's software is too buggy and :hd channel count is low compared to TS.
In case of PQ and AQ,I found that in some channels in Videocon D2H,PQ is same as that is provided by TS but in some channels its is pathetic than that of Dish TV.