I highly recommend if possible, compare the HD recievers side by side, or at least try both. Interfaces are VERY different, and then compare some of the Hardware/software features. Since Congress finally did away with all the legacy distant networks, I have for 2 years tried to get the family to move over to Direct, for the NFL package. Everytime we compare the HR21 to the ViP622, family balks everytime, over the interface, and even I back down as Direct Recievers lack Dual Live Buffers, which for sports and the NFL package is almost a mandatory feature. Direct used to have DLB, removed it while just about every other provider has added DLB. I use the AutoTune and Remind features alot, and prefer them over setting everything up as a recording. Still not sure why D* gives you a 700gb internal drive that is useless once you connect an external drive. PQ is close, but I will give the edge to Direct, but not by much.
Play with the hardware and the features, and interface, you will be using this reciever for 2 years.