I use the Sony TRV-33, for both applications. It has a megapixel ccd, which is really pretty sharp for dvds, its small, but still has all the features of the big models, touch screen, etc. Right now going for about $520. MiniDV format, widescreen, allows you to plug in an external mic. You are better off having a 2nd person run the stealth audio or allowed stand audio. Just mate that later with your vid for the dvd. It's very easy to do, especially with only the one angle.
-dvn