Thanks TOO. As I've only the one 155 and a Mitchell that gave me 760 instead of the old 720 Narco 11a, I'll probably have to consider a bit more of an upgrade (can you tell I'm always behind the curve?). Most of flying is GPS based, but it's portable, so I prefer to have a "proper" approach aid as a get out of jail - I do do a lot of real IMC........