Any dvd-r media should work well. I think the 103 toped out at 2x write, so you don't really need anything faster than that ... although everythings going to be 4x or 8x rated by now.
I'm particulary fond of Ritek G04 media. You can find it online at many stores, such as shop4tech.com ... sometimes you can find it under the FujiFilm brand in retail stores, but it could also be some other brand. Fuji sometimes relabels Ritek, so there's a chance a spindle of FujiFilm could be Ritek ... or it could be some other company.
-vasu