Congrats on the new audio device.

As a fellow Quad user, may I ask what motivated you into going with an Apollo?
I have found the Apollo works very harmoniously with SONAR Platinum x64. I recently upgraded to Win 10 Pro x64 (from Win 8.1 Pro x64) and the Apollo/Splat combo made the transition seamlessly.
FYI, UA will be releasing a free upgrade to Win Apollo users that will update the Console to "2.0". It is a major update adding 20+ new features & functionality. It was first released for Thunderbolt Mac's six months ago and will roll out for PC's and FW Mac's this Fall. I already use it on my Mac Mini using an Apollo Twin and Thunderbolt, so I can tell you this is a killer update with many much needed improvements that really enhance the Apollo Console workflow.
The link below has a brief over view of what to expect. Most everything presented in the video is new to 2.0.
https://www.youtube.com/watch?v=ekJwv2S22Ic Cheers,
Billy Buck