I want to bring in my own perspectives in this discussion. It is not my point that
Tata Sky is absolutely perfect. It has it's flaws (which company doesn't?

) . But then thing I want to ask is , is it sensible to move just for one channel? You need to make a thorough cost-benefit analysis and then decide, don't deciding on impulse. What about other packages? what about services? etc... Every individual has different
TV viewing habits, so there is no one size fits all solution to all. Each person makes his own decision. So let's not generalize about
Tata Sky. It works out really well for me and I think it is good. You may differ but these are a matter of perception.
Personally, I think not having too many channels in base pack is a good thing and I am grateful to Tata Sky for that. I know too many people who are NOT-sports lovers

and they wouldn't be too happy to pay for these channels (nor would my parents) . so having add-on is convinent and reasonable as you pay for what you watch. Nothing more or nothing less. So I support Tata Sky in this regard.
I don't agreed your points. TataSky especially lacks many south regional channels instead of channels or compared other DTH services. They faced more condemn when removed DD-Pothigai and then added years ago and now moved to interactive mode.
An another example as you talk about parents, my mother like to watch NGC, Animal Plant and Discovery. These channels not come in base pack but you can get atleast NGC and History channels.
Same as Sports pack, many of them need for sports channels at least Star group sprots channels but the cost more in tatasky. So, the list of dissatisfaction with TataSky more and more.
Really i dont know about BIG and Videocon but can say TataSky is worst in south side. I was used last three years and more, finally moved to Airtel.
I can't easily adopt with Airtel till date but satisfaction there. It has may points you can read within week in Airtel DTH area.