The DISH PVR simply records the originally satellite MPEG2 source - so it should be the same quality as the originally received signal you get from your satellite. I have the 501 and note no difference between viewing live or recorded programs, even in S-video. However, if you have not already purchased the unit, you may want to check on the ReplayTV unit - it claims to work with satelllites and would have the benefit of being usable with cable or any other service you may have or change to in the future, while the Dish PVR will ONLY record from DISH satellite. Don't get me wrong - I love my unit, but I also have local cable and really wish I could record off it as well.
The DISH PVR simply records the originally satellite MPEG2 source - so it should be the same quality as the originally received signal you get from your satellite. I have the 501 and note no difference between viewing live or recorded programs, even in S-video. However, if you have not already purchased the unit, you may want to check on the ReplayTV unit - it claims to work with satelllites and would have the benefit of being usable with cable or any other service you may have or change to in the future, while the Dish PVR will ONLY record from DISH satellite. Don't get me wrong - I love my unit, but I also have local cable and really wish I could record off it as well.