Cool vid Rox, I must remember to record TS as well to splice it in. Although, there's rarely any singing in the 402nd!
Tracks + Fraps + Premiere. That is my method.
Tracks do seem to be quite stable in GBS, more so than the old ntrks of '46 that seemed to deteriorate after time elapsed; although there is I believe a file size limit for a single track in GBS.
I don't have any experience of DCS tracks so can't comment.
I try to remember to hit record whenever there is action, then replay at a later date for screen and audio capture in Fraps. Here you can of course hide the UI / icons etc and 'Direct' your movie how you see fit. The FPS style free-roam camera is fantastic for getting some unusual angles.