I was looking at a similar drive for my Media Center PC. The LG GGC-H20L drops the Blu-Ray buring portion, and isn't priced too badly ($299, although it was $229 just a little bit ago). One nice thing is the BD Profiles are all a matter of software (such as PowerDVD), and not the drive. I don't know about the audio support though.

There is a rumor that the Xbox 360 HD DVD add on will drop to $49 in the next week. I'll definitely pick up one of them to attach to my Media Center PC. Since I already have over 100 HD DVD's a small drive is a small investment to ensure I will be able to watch them for years to come.