Hey just researching the same unit and here I am .
there is so much up in the air stuff about the unit regarding play back issues and they say go to Akia forum but hey you have to register first ... gee thanks ! anyway I'm interested in it.
As for the latency the included drives are a bit on the slow side , they say so it can be used by folks with older machines .
There is a youtube review from England I believe that has this info. they also noted the buffering times.
What the reviewer said was he had to contact the drivers manufacturer and they seemed to have a driver update that will keep pace with the other usb interfaces out there. let me look for the link .......
https://www.youtube.com/watch?v=WJq1MJU0WfU
K so I hope it helps also hope to hear about it's performance from fortch