Ok I have read over and over that Dish downgrades HD. Is this true.
In 2010,
everything is far more complicated than that.
Is Toyota a good car ?
It's far too complicated than to say yes or no. (It depends on which model, and what you are using it for.)
There are three kinds of HD channels:
- Broadcast Networks (ABC, CBS, etc)
All cable and satellite providers "downgrade" those channels. You will always get a better quality picture with those from a rabbit ears antenna.
- Premium Channels (HBO, Showtime, etc.)
Generally, the $10-$15 per month you pay for those channels means that almost all cable and satellite providers give you quality roughly equivalent to what they receive. Some channels, like HBO, actually check this.
- So-called "Cable" Channels (ESPN, CNN, etc.)
This is where there is some variation. There are a LOT of these channels, and it takes a LOT of bandwidth to provide them all in HD. Generally, providers use enough bandwidth to provide quality for a 37-42 inch screen. Those with very big screens report some artifacts with Dish, DirecTV and almost all cable providers. This is why Blu-Ray is always better quality.
Interestingly, reports say that some channels are a little better on Dish than DirecTV and other channels are better on DirecTV than Dish. Over time, which channels change.
Overall, people report the best quality on "Cable" channels on FIOS TV system.