One of the things that I absolutely love is the portability of the PreSonus Quantum 2. When you stack that along side the lightning fast Round-Trip Latency, solid drivers, phenomenal preamp & converter quality, and the ability to cascade up to 4 Quantum's together - You've got yourself one heck of a powerful mobile system. I currently have 3 Full size Quantum's and 1 Quantum 2, and I have a couple DP88's as well. When Im working with my mobile rig, there's something to be said for only having to manage one application, and monitoring through native plug-ins while tracking.
In the above playlist, you'll find what I consider to be "everything you need to know" when running the PreSonus Quantum 2 Thunderbolt interface, all packed into a single playlist for your convenience. :)
Hope these videos are helpful! Cheers, M..