If he is into serious carving, some people angle the bindings forward more than others. This will lower toe and heel drag.
I don't want to make this to complicated. Some boards will carve differently according to where the bindings are, and angle orientation. Hopefully you can find a person/company who will give you appropriate answers.
Where you find big mtns.( Heavenly, Jackson Hole, Switzerland,ect...) the snowboard companies tend to be rocket orientated. Hopefully one of these companies or someone who understands them can give better answers on current products.
Nidecker
http://www.nidecker.com/