First of all, I'm a single coil builder, and use the BF's on my Reos . I'd like to see more inexpensive 2 posts rda's that don't have one post so close to the edge. If the posts were closer together, it would eliminate some of, if not all, having to bend the coil legs to fit the coil between the posts. My builds are 30 gauge wire, about 7 wraps for a 1.4-1.5Ω,short coil. So, probably not enough demand for something like this for many to produce it. 