I won't resort to superlatives, as they certainly don't make you climb like Ricco -there are other important factors.
They do do what they advertise:
I can feel the better roadholding (maybe because I have swapped to pro3race from Conti 400's?)
They are stiff and don't wobble in sprints
The brake clearance is not great on mr TRP calipers - so I know they are stiff.
The brake clearance is poor depending on caliper. I have mine all the way open. Remember however you don't need to open it further to get the tyre out, as it is also 23mm.
They are light - perceptably so, coming from my previous wheelset - Spinergy Stealth PBO's (Deep rims)
I cannot feel the "tubular ride" - however I have never ridden tubulars, and my previous Spinergy's spoil me with ride comfort due to PBO spokes.
I cannot vouch for the aero advantage - probably ride too slow
Seem to be a reasonable alternative to all the Mavic etc... They are certainly not a dud wheelset. Good price