The only complaint my passenger has had is that the pegs are solid aluminum. Without rubber inserts they do transmit vibration to the passenger's feet.
She just sounds like a whiny beeyotch.

The issue of passenger comfort on a C14 came up in another thread and, aside from the aforementioned complaint about the solid aluminum pegs, this was my response:
I don't have any issues with my back, knees, or hips as a passenger on a Flying Pig. We did upgrade to a Sargeant seat, but I never rode on the stock seat to be able to say how different they are. We've done two five-day trips (one 1,300 miles and the other 1,700 miles) and I didn't have any specific complaints at the end of each day - just the general fatigue of a 200-300 mile day of twisties.
As for wind, I can tell when Cablebandit has switched out windshields, but it's not a
huge difference, nor is it uncomfortable. I'm fairly shielded on the backseat from a lot of airflow...enough to be protected when it's cool, but still get enough air when it's hot. I'm 5'6" and I don't feel like I sit that much higher than Cablebandit who is 6'.
In my "real world of touring," life is good on the back of a C14!