I called recently about adding a DVR and they said I needed to purchase one, because we haven't been a member for a year yet (10 months).
I was hoping to rent the DVR like we do our current boxes, instead of paying $300 for one. They told me to call back after the first year was up and they might have a promotion then. Not sure if they will or not, but I'm going to give it a try before I purchase one.
Haven't had many problems with Dish, we had a few brief outages due to heavy rain last year, and one weekend our locals went out completely. Still better than the Adelphia Digital Cable we had before.