Hifi, if dont mind....why did you have two units? Summer/winters homes or just different rooms?
And, I think any used unit that came from a member here would be rather worry free purchase as we all took full advantage of the exchange program. I'm sure there may be a couple of members that may not have noticed some of the small stuff that some of us more picky/observant users noticed. But...if their was a warranty transfer then shipping the unit to Sony isn't a very big deal. All that said, if I were in the used market as a buyer I wouldn't purchase from anywhere that I couldn't see the unit in action unless they accepted returns which would be highly unlikely from a personal sale. Once you're in the market of $10k plus on used electronics, paying a few extra hundred/thousand for assurance isn't much really so buying a marked up unit from someone like Mike could be worth it.