I've read the forum and can't find any answer to this: When you record from the HD-DVR to a dvd recorder, is there any improvement to quality if you use a dual layer dvd as opposed to single layer? I've been using single layer for years with no problem but I think my DVD recorder is showing its age and may need replacement. I'm thinking of getting a dual layer recorder but I'm wondering if I'm gaining anything. Anyone out there have any experiences in this? Any advice or recommendations? TIA.