As the subject asks, does the 522 suffer from one of the biggest problems that the 721 has... playback of some recordings will stutter/lag for a few seconds. This is very annoying and forces me to have to babysit the 721 while dubbing off a show. I've had 4 721s over the past 2.5 years and ALL of them suffered from this problem. I have 90+ signal strengths on both tuners and it doesn't seem to be related to how busy the unit is -- it could just be playing back a movie, and nothing else, yet I still have this problem at times. I would consider selling the 721 and going to a 522 if it would mean that I would no longer have to deal with this issue. BTW, people with 721s that say they have never experienced this stuttering/lag either don't pay very close attention to what they are watching or they hardly ever watch prerecorded material from their 721, IMHO.