BHB is awesome. I get my feeders from Mack's and I've never had a problem, never heard of Layne so I can't say one way or the other.

BHB has a reputation of churning out healthy, handle-able snakes that are good feeders on f/t, for very reasonable prices. You can even email them and ask for something super specific and if they don't have it, they will tell you when they do. I emailed them once (ages ago) asking for an extra tame adult female with a really specific pattern and they kept in touch with me literally for weeks afterward until they found me a snake... And it wasn't even an expensive snake, they just care about their customers. They are excellent.