If I were looking for a wide aluminum clincher, I’d probably look at the Boyd Vitesse. $550, 23mm wide, 28mm deep; not quite as cleverly shaped as the 101 but it looks reasonably more rounded than the A23 or Hed offerings:
http://a248.e.akamai.net/...72w-4.jpg?1333038013
They are very nicely rounded rims… and I’d wager more aero than the 101… which isn’t deep enough to make good use of the toroidal shape. The 101 beating the Mavics in the Tour test doesn’t mean much… the Corima Winium beat the 101 and it is only 24mm deep.