I've used both and prefer BE. SMU gave me too much crunch, and the ringlets were much too fine. Plus, my hair looked much more coarse with it. Didn't feel that way, that's just how it looked. With BE I get fatter curls, my hair looks 100% extremely healthy, and I get great hold without crunch.
3B Corkscrew... I'm back on the boards now! Just got The Big Chop on Monday, pics coming soon.