ugh... I'm an idiot. I have NO idea why I thought the OP was referring to CD-Rs... the best excuse I can come up with is that it was early in the morning when I posted that
As far as Office Depot DVD-Rs go, they could also be a wide variety of MIDs. Assuming we're talking about the 16X DVD-Rs, I'd guess something like RITEKF1/CMCMAGAM3, both of which are quite lame (IMO). Videohelp has reports for RITEKF1 only, so that's what I'd guess to be most likely.
I'd recommend the Sony 8X/16X DVDR 50pks that are on sale this week for $13 @ Staples. The made in Japan variety, that can be identified by the white spacer on top (as opposed to gray), would be preferable to the Taiwanese stock.