I just use a fine permanent marker, and write 9>5 or 5 indicating if its transcoding if its a DVD.
The thing is with normal printers, the cartridges is a total bitch. They overcharge so much on what's essentially plastic and ink. If only someone would make one where you just pour ink in the top of the print, but then, no company is stupid enough to cut out the money making step that is the cartridge product.
This sounds excellent though, since there's no ink

But only if plextor and pioneer take it up would I ever buy one, not crapping out on the burning side.
Just the quality and price of the media is of cocern about the whole thing.