Hed's Sonic hub? How good it is???

Looking to buy some deep carbon aero wheels. Hed's option seems attractive, not like the jaked up price Zipp models. Not sure about the quality of their Sonic hub.

I have hed alps. I've raced them for 3 seasons, both road races and time trials. but that's what they're for...racing, and that's the only time I use them. I like them and I would buy them again.