We are obviously doing very different types of photography. I tried an AS B1 on 4x5 and hated it, I can't imagine using it on 7x17. I know a lot of people like them a lot. Doesn't it worry you a bit that using a head you already own is too easy and cost effective? It can't be right! (ha ha) I am now using a Sinar head on my Norma. The Ries is absolutely solid, but is certainly too heavy to carry very far. It does nicely compliment the 360mm f/5.6 Symmar that probably weighs as much it does. I am now in the process of designing and building a cart to move this beast around with. I will be working primarily in urban settings and a cart should be very handy.