What's best and cheapest cable network for RVing

we have had both Dish and Direct .... during our travels which have covered all of the lower 48 states we have never failed to be able to lock onto a signal from Direct .... can't say that about Dish, there were parts of the upper New England states where we couldn't do so .... granted, that was several years ago, their coverage of that area may well have improved .... with Direct, we do not have HD service which to us isn't an issue .... our camper's TV predates HD technology

Jim