I have an Infinity and a Roxy envi board with magna traction. Both have good flex between the bindings. Roxy doesn't make the envi this year but I'd recommend any of their C2 BTX boards. A link
to a page on their boards with some reviews. Even stiffer boards with good flex between the bindings are easy to turn. Also the Roxy boards feel very light. When I'm on powder with the Roxy I just pick up my front foot and don't even think about leaning back. And if you ride ice, the magna-traction is great. This week was kind of icy and I didn't skid at all. (Can't really compare the Never Summer vario and the magna traction-- both seem good for ice to me although my husband (the engineer) insists that magna traction is better even though he rides a NS.) Can you demo anything?