The Toshiba DVD-writers seems to be the best one for backup´s of SD2.x, but I don´t recommend them because their writers are the worst in writing-quality with DVD´s.
I recommend the LG, it seems to be a good one for backup´s.
Or buy a Plextor Premium CD-RW-drive for those things and a DVD-writer
Benq DW 1640, LG GH-20N, Pioneer BDR-208
Crucial M4, Sandisk SSD, Plextor M5S, Sandisk Ultra Plus, OCZ Petrol 256GB