Have test ridden a C17, C15 Slice, B17. Currently own a C17 and Team Pro.
They all seem fine for shorter rides. It's after 50 miles that they feel uncomfortable for me.
I still haven't found a comfy saddle at the 100 mile mark of a charity ride.

Are there shops in your are that have demo/loaner models?
2015 New York City Century by 1nterceptor, on Flickr