I think you'd really need to demo these boards to know for sure which one suits you best. They are all excellent.
The Lotus is definitely a very stiff freeride board. The Infinity is softer, but is still on the stiffer side of the all-mountain freestyle designation.
The B-pro is also pretty stiff, but I don't think it's as stiff as the Lotus. The B-Nice would be the most forgiving of the bunch.
I have ridden a Never Summer Infinity and currently own a Gnu B-street. I like them both, but I have small feet, so the Infinity was just a bit too wide and long for me. It didn't take long to get used to the RC tech, but it did feel "loose" for the first few runs. After riding the Infinity for a few days, the banana tech on the B-street was easy to acclimate to. The B-street is a lot lighter, which I enjoy.
All of the boards float well in powder and perform well on ice. Never Summer has a better warranty and you may want fully wrapped edges if you are going to be in the trees and freeriding a lot (Gnus don't have fully wrapped edges).
As long as you are not a beginner, I would say the Lotus seems to suit your riding style the best. If you don't want a super stiff board, go with the Infinity. Then the B-Pro, then the B-nice, in that order.
Have you read Shayboarder's reviews yet?