Ive heard that varirec can make better audio recordings to cd. I don't know if it's true or not, haven't really tried my premium for audio much yet. But if it is, I would think Plextor (or somebody) will start putting out drives with similar abilities, to make sales off the music burning crowd.
The gigarec feature is nice too, and some company I'm sure will follow Plextor's coat tail on that one too. My 2 cents anyway