Just got one a few days ago. "Upgraded" from an assortment of the base stations with hacked together IR emitters. Essentially, for $500 I have what I pieced together from parts for $800 a couple years ago and it actually does what I want it to this time.
I'm not an expert with it by any means, but it seems to be pretty much as advertised so far. The manual is a disaster for setup, though. Once you have the "Aha!" moment, it goes pretty smooth, but I didn't have mine until about 5 hours and 8 beers went by around 3am. Then it is pretty tedious, but I'm a perfectionist on the layouts, so that might be more my deal than anything.
Haven't played with anything other than the IR emitters, though, so I can't comment on USB connections, et al.
Be happy to answer any questions I can.