hyoshim,
I've seen both, and they each have really terrific picture quality compared to "regular" TV. You won't go wrong (IMHO) with either. I have Dish, because it had stuff 5 plus years ago that I wanted that DirecTV didn't have. I've quite frankly not bothered to even look at DirecTV. Who knows, maybe I'm missing something fantabulous. :shock:
Both services have "churn" of just over one percent, so folks tend to stay once they have selected. I suppose you could say the churn translates to a 99 to 1 vote that they're both good. Most newsgroups have comments which would translate to just about 99 to 1 "bad".
The arguments about Dish vs DirecTV, XMRadio vs Sirius, and the like, are the modern equivalent of medieval scholars arguing about the number of Angels who could dance on the head of a pin.
You'll go nuts if you wait for "the next best thing". There's always something better available (usually just after I buy the predecessor).
Just get something, you won't regret it.
There are probably lots of folks who disagree with me on this, and that's OK. That's why we have the forum. :?