We have DirecTV...
I used to be a hardcore TW fan, but we decided to switch to DirecTV for 2 reasons, 1)Setanta Sports 2)Assload of HD channels. I am having a hard time trying to think of a channel that is not available in HD...
When we first got it it, it took me some time to get used to the way the UI worked. I think it was mostly just because the channel numbers were different. I really didnt care for it at first, but now I think its the best.
We used to have satelite way back in the day too, and I hated satelite because when theres bad weather, youre not watching tv. This isnt the case anymore, it has to be REALLY bad out for you to not get reception, and it usually doesnt last for more than a few minutes.
Insight used to be my least favourite, it was far behind the rest. Its not too bad now, but I still prefer DirecTV over it. More channels, and a ton more HD channels.
Being able to watch movies in 1080p is nice too, and being able to watch recorded shows on any device connected to the network is also pretty nice.