I have tried both...

--Have a couple of the A4 type boxes, Mine are a little flimsy but only cost a buck each. A couple of pieces of self-sticky 2mm craft foam on one side (trimmed to fit) and they are GREAT for lager flies, but not real durable.

--Also found a clear box that is just the size of the "bugger barn" at Hobby Lobby. For the insides, I had a couple sheets of dense foam that I'd bought at Bed bath and Beyond (they were placemats) for making poppers out of. I was able to slice them at 1/2 inch intervals (not the entire length of course) and then glue them in the box. Also works well. Cheaper than a bugger barn. but a lot more hassle. I enjoyed the do-to-yourself aspect, others might not.

Good thread, thanks for starting it!!

Scott