[Robert Payes] “2) No. Since I assume you also have DVD Architect, you can shoot and edit HD footage, then render for disk authoring using the NTSC Widescreen video setting in Vegas; your video will play fullscreen on a 16:9 monitor and letterboxed on a 4:3 TV.
This is true, also having captured HD footage allows you some freedom if you ever want to just use a portion of the screen you can zoom in without losing quality for DVD.
However, if you were positive that you’ll never want to burn a bluray of the footage, there are advantages to shooting in standard definition widescreen. One is that it’ll take up less space on your hard drive, if that’s a concern at all. Another would be the time it takes to render the final project to mpeg2. But if you’ve got enough hard drive space and aren’t in a hurry to render, I’d agree you should just keep shooting in HD.