if you are going to spent the $847 on a wheelset why not look at Rolf Prima wheels in the closeout section? I picked up my Vigor RS wheelset from them for $880.0 and they are so nice and stiff.
Oh and I am a super clyde at 360 pounds and these wheels are holding up just fine even when I go over a bump such as a rail road track or a seam at an intersection where there might be up to a 1.5 or two inch change in pavement height.