I am using the Turbo 264 on my old powermac G4 Quicksilver. The speed is not bad on that system. I agree, there is not much benefit to the turbo on a MBP 2.4 ghz. The reason I got it is that I want to take some of the workload off of my MBP when converting my DVD collection. Movies that I really like and want to preserve the maximum quality I use handbrake on my MBP.
What I think is happening on the audio syncing issue is that on DVD's that have multilanguage support the beginning of the movie has multiple messages in different languages depending on the region you are in it will only play the approriate message (english or spanish, etc). The elgato turbo puts the messages in series, so normally the movie will start after the message and will be synced with the audio, but on dvd that have the messages in english, spanish, french etc, it plays the same message over and over in the different languages with the audio for the movie playing in the background. This generates about a 30 second delay between the audio and video.
It doesn't do this for every movie, but it does it in a fair amount. It is quite annoying.
It is not a bad product, but the software that comes with it is pretty rudimentary. It would be nice if handbrake supported the turbo, so I could use it on my G4.
Is it possible to manually edit the video to get rid of the extra stuff at the beginning?