Thanks, Dave and John,
My new EXR3 just arrived and I'll be able to play with it this weekend. I will try out the UX16 and see how it works. You have given me a lot of starting info and things to think about for the future. I'm sure I'll be getting back on the forum quite a lot over the next month or so with a lot of questions about my new keyboard.
Thanks to EVERYONE that helped!
Charlie