Silverback

Ok, got it.

Both the Balancing Act and ZD has a rather useful dedicated thread on this site.

Looks like a very potent candidate, but, alas, the only source of info is a sole thread on SBAF. Hopefully through this fora, more insights and opinions will be gathered from this product. I've mostly heard positive feedback from the EC products, save for some quality/longevity issues with the original Zana Deux.