I have an older Sony still camera that records to mini disc. It works fine but there are hassles. After you insert the disc you must place the camera on a desk or something that doesn't move then push about 5 menu selections (not easy) to select initialize. After you initialize you can push the menu buttons again to take pictures. There is a physological barrier here as after the picture is snapped you must wait till the light goes out as it's burning it to disc. After taking the pictures you must place the camera on something that doesn't move and press another five menu buttons again to finalize the disc. It's kind of a pain in the neck. The mechanism is shock mounted on rubber. I was surprised that it did work. The camera does get confused by horizontal siding on houses, etc. It gets all ripply sometimes. I probably will never ever purchase a camera that burns to DVD disc.
JJK
Why, assuming they're writing the same data stream as they would to tape or P2 card. I'd certainly prefer a removable and archival DVD to P2 cards any day.
Of course if they're writing a program stream like the current crop of DVD unhandycams then all bets are OFF.
I keep thinking tape is still the way for me. In terms of traveling I don't have a laptop so tapes remain small to carry, easy to buy most everywhere, and are cheap. I can pop them into all my cameras, etc.
Yes, it takes time to load onto the hard drive but I have two computers side-by-side to I can keep working while loading.
I bet I'm missing some benefit to other formats, but for now I'm happy with what I've got.