After almost 15 years as a voiceover, going through audio interfaces from M-audio and Focusrite, i decided to make my Neumann shine. And this one really makes your gear sound better!
What I didn't really enjoyed (but is understandable with all the features) is the installation. Coming from much simpler interfaces, having to download, start, restart was a bit annoying. But after that, everything was pretty simple.
Another inconvenience is coming from the need of buying (pretty expensive) plugins. For example, I love the sound of Avalon VT 737 as a hardware and the pluging in the UA was pretty good. But having to pay 200+ Euro for this isn't the best experience. Also loved the Manley plugin (about the same price).
Overall, you get a great sounding interface, an Apple design, pretty easy to use and the possibility to have multiple famous hardware for a fraction of the price.