I've had DISH for over five years now, so I can give you my experiences: Equipment: I've had dual receivers (plain Jane model for the family, high end for me :D ) from day one. The plain one went wacko after three years and had to be replaced. The high end model (4000) finally started losing...
I've had the 508 since November and love it. The only problem (and it's minor) is that the remote isn't quite as powerful as my previous one (the original 4000 receiver).
Here's the list: Air Force One; Ali; Bad Boys SE; Big Daddy; Black Hawk Down; Boyz N the Hood; The Bridge Over the River Kawi; Charlie's Angels SE; Close Encounters of the Third Kind; Cruel Intentions; The Fifth Element; Finding Forrester; From Here to Eternity; Ghostbusters; Joe Dirt...