I agree with the others. You need to make a list of channels that you watch, and make sure that they are on Dish and in the tier you are selecting. Also you mentioned Red Zone, Dish has Red Zone but not Sunday Ticket.
Now with that said, I too was a long time DirecTV customer who left due to their inability to resolve a problem. After several weeks of getting the run around and coming to the realization that it was possible that 3 of my 4 DVR receivers may never get locals back, I looked into Dish. I too was intrigued by the Hopper, but I gave DirecTV two more shots at correcting the problem, and their only solution was to blame Tivo and offer to upgrade one of my DVRs for no cost and a new 2 year commitment. Well I canceled, and Dish was at my house the next day and installed 2 Hoppers and 2 Joeys and one sling adapter. There were some issues with the install and DiRT got it all straightened out for me.
Now I never had a Genie (the newest receiver I had was an HR21), but the Hoppers (I have since been upgraded for free to a Hopper with Sling) including the speed of the Hoppers interface and channel changing, Dish Anywhere, the ability to easily add external hard drives that do not simply replace the internal storage, the incredible range of the Hopper remotes (works great for mirroring, even from my second floor to my basement) and the Customer Service I have experienced (especially DiRT) makes me very happy that DirecTV was unable to fix my issue. Since I left DirecTV has offered me way more then it would have taken to keep me at the time, but whenever I think about taking them up on their offers to pay my ETF, give me a Genie and 2 years of price breaks, I can't justify giving up the technology of the Hopper and going back to the poor customer service that I encountered.