If you compare the equivalent AT package to Direct's Plus HD DVR package, then yeah. DirecTV will have more channels for less money. Also, less nickel and dime fees. But, D* offers nothing like E*s DishHD pack, which is a great bargain for 40 "HD" channels, which include all of the nationals I'm interested in anyway. Why pay for a bunch of channels I don't watch? (Even the so-called stretchovision channels will look better than their SD counterparts due to higher bandwidth and less compression. A lot of Animal Planet HD's shows are like that, and look great.)
Then there is the issue of HW. It's hard to believe after experiencing some of the steaming pieces of crap Dish has released over the years. But, they have a superior HD DVR. And, it has a built-in OTA tuner, unlike the HR21 which needs an add-on piece that would steal precious real estate in my HT cabinet.
I'm familiar with E*'s piss poor customer service. So, no surprises there.
As for Voom, it's much ado about nothing. I was not interested when Dish had them, and I wouldn't be interested in Dish if they kept them and didn't add the nationals that they wisely did. You, OTOH, seem to miss them. Switching to D* won't bring them back, you know. But, if you feel you would be happier with D*, you should definitely switch. (If I was getting a full programming package, I would choose them, as well.)