Edinburgh gun cocks off the top lever
DMB off barrel drop
To clarify, I think the OP was referring to guns made and retailed from the city of Edinburgh rather than the MacNaughton model of the same name.
IMO true Scottish round actions are undoubtedly very nice and interesting guns. They were beautifully made and can definitely be considered Best Guns. Whether they are any 'better' than a equivalent English gun (all things being equal) is entirely subjective: they both work very nicely thank you if pointed in the right direction!

From a gunsmithing perspective, they are all nice to work on but have their own little quirks which can be REALLY annoying when you are not used to them. For example, Dicksons use an odd double taper on the heads of their triggerplate and breech pins which is challenging to turn up correctly.
I think I am right in saying that all the Scottish round actions have stuck with their bespoke ejectors right up to the present: Dickson certainly have always made a USP of having their ejectors in the body of the action which therefore couldn't be a 'Southgate'. I think DMB also invented his own ejector mechanism but whether he has stuck with it, I don't know.
I really don't have a dog in this fight, I have bought, restored and sold all the above and will happily do so again.