Here's a little review after using mine for a few hours:
Frankly I'm not too impressed. It did burn everything I threw at it (using Nero and CloneCD). I burned data, music (mp3 to WAV), images, and bootable Cdrs (Win2000 slipstreamed sp3). I didn't try the Mt. Ranier thingy.
What frosts my ass is the limited burn speeds. You can't choose anything between 16x and 44x. Even with the OWSC turned off there still isn't any choices available between 16x and 44x. I have a lot of CDrs that are 24x or 32x (according to cdrid or the Lite-on speed utility) and will burn fine at those speeds on my Plextor 40x or Lite-on 32x. If I burn them on the Yammy with OWSC turned ON, they are limited to 16x or 20x. If I turn the OWSC OFF I can still only choose 16x or 44x. If I burn at 44x everything's fine until the burn speed go over 30x or so (I've done the reg hack to my Nero so it shows the actual burn speed in real-time) and then the burn errors out. This is BS, these same CDrs burn fine on my other burners when I can control the speed.
I'm probably going to take this back. It doesn't do anything better then my Plexy, and the burn speed issue is BS. Maybe I'll call Yamaha support ONE time and see if I get anywhere.