well, thanks for the advice everybody
I've eventually gone for Nikon 16x50, Action VII Binoculars. Bought online from Microglobe for what seemed to me like a reasonable price.
Anyone with any experience of these? Drawbacks or plus points appreciated.
I want them for viewing overflyers in the Heathrow area. I have another excellent pair for low level landing and departing traffic.
Thanks,
MM