I have the TDK 24x burner. It is a great burner, although it doesn't work with XP's native burning (no big deal, it comes with Nero). Anyways, The 24x burner with the blue tray is a Lite-On (checked the fcc # on mine and it definitely is). Someone told me that there is a 24x with the normal white tray, and it is a Sanyo. I havn't seen any of those. Great price. I will likely pick up another one.