I'm so confused on the different batt choices! And am never sure what the "best" will be.
The same batt, with a different quilt ... different fabrics, amount of piecing, quilting ... can have such a different feel to it. I've had W+N that are flexible and drape lovely, and some which do tend to be the stiff feel. Until I can compare apples to apples, it's really a hard one to know!
I'm really intrigued with bamboo ... saw it in the store this summer and absolutely loved the feel and drape of it. I'm sure I'll be trying it ... unless I hear reasons to not go there! :)