Finally found an LCD display that we might be able to use with the Bifferboard, but which won't cost a mint. Sure Electronics now sell an HD44780 display but with a serial -> parallel converter and a serial USB chip (cp2102) built in. The price certainly gives Matrix Orbital a run for their money! Mine's on order, and I'll let you know how I get on when it arrives. If it works out, perhaps I'll start stocking them.