In reply to abr1966:
Can’t help as I’ve yet to decide on a scope, though there was useful help on scopes in a previous post see https://www.ukhillwalking.com/forums/off_belay/some_recent_bird_photos-759149?... for example.
I’ve had some limited hands on tries since then and it does seem more expensive scopes are usually better, though it can be marginal gains (sometimes very marginal) at often premium prices. Whether the improvements are worth it is subjective, and whether you can appreciate the improvement and justify the cost is up to the individual.
One thing I noticed though in a trial is how they are to handle, operate focus, etc. Some feel more natural and easier to use. Also, if your eyes need certain requirements (eg more diopter range) then that would be more important than magnification quality.
I tried out one of the RSPB scopes, probably like The Lemming’s one, and for the money it did seem a very good scope and such that it is on my list. I would like to try out other makes, however, in the same quality range to see what other makes are like.