Specific to these newly redesigned 2014 wheels: http://www.rolfprima.com/products-tandem-page.php
The "alloy" disc or rim brake version would be the more universal set of the two.
The "new" alloy version is 33mm X 22mm wide, so it appears Rolf has joined the "wider is better" trend. Plus, "The 2014 Tandem Disc wheel set now features our Delta Rim Technology used on our highest end road wheels. This new rim improves the overall stiffness and handling as well as increases the aerodynamic advantages for every rider. ".
I suspect it could take some time for a good sample of feedback to come in.