MTU markets the Plextor line. Go to the website under KARAOKE PRODUCTS, then CDG CD BURNERS, and you should be able to get a handle on it.
On the speed, I do the same thing, slower on CDG and wide open on plain vanilla audio. I do the same with discs, Mitsui for cdg's and Memorex for audio. Haven't been disappointed yet, and not in the coaster business.
Take care,
George