I also use DVDs as a replacement for VHS for client approval, unless split second immediacy is a big issue, in which case I’ll burn a VHS. I’ve been using the aforementioned procedure for about a year and a half. It helps that I have a separate Mac just for burning DVDs so it doesn’t tie up my editing system.
My understanding is that realtime DVD recorders still have compatibility issues with some DVD players, as well as increased coaster output. You might check dvdhelp.com for some good info on that.