I'm exploring the cost differences. I currently have TWC for TV, Internet and Phone, with a recently re-negotiated monthly cost of $130 (guaranteed for a year).
Dish, by itself, AT250, 1 Hopper, 1 SuperJoey, 1 Joey, would be $70 plus taxes/fees. TWC Internet and Phone has to be less than $60 to avoid my monthly costs going up. I'm doubtful I can get that, but will see what they can do.
(Ironically, my TWC Internet connection has out of nowhere become flaky - modem resetting every few minutes. This, fortunately, is a rare occurrence.)
The cabling issue is another consideration - both Dish and TWC will want to use the existing cabling. Will one end up having to set up a new set of cabling? We need 3 primary TV connections, and 2 others for some kind of minimal access (possibly mirrored).