Madthumbs, actually the plextors can do SD2 with the newest version of CloneCD.
Xynder, which burner to choose really depends on what you will primarily use it for. If burning games and programs is your priority then go for the lite-on. If you are interested in ripping and burning audio CDs, a Teac or a Plextor would probably be a better choice (b/c the lite-on doesn't like scratched discs, the reliability of the other two is better).
So, it really depends on your needs. However I would probably avoid a sony as they aren't great drives.