I am in the exact same boat as you...so much so that I thought I wrote this post.
I am currently riding the RS10's that came on my BMC and was debating a new wheelset for a long time. I just purchased a set of Soul 4.0s from Sean and should hopefully get them soon.

I was mainly looking for a stiffer wheelset as I have found the RS10's flex a bit too much for me. Anything above and beyond increased stiffness on the 4.0s is a bonus for me!