I am glad to see that you've made your mind very quickly and efficiently, imo the decision you've taken is quite sensible. My suggestion would be that you also have a look at Swaro 12x50, I am pretty sure that handheld the Swaro is better than your Meopta (but on a tripod the story could...
You've started to see the light (pun intended): what you mentioned are reflections from the eye lenses caused by side light.
The resistance of the NL to glare caused by frontal light is worse, so wait for a sunny day in Stockholm and try to look thru your NL near the sun...
I have seen your 10x32 and 15x56 on Blocket, I have never looked thru the Meoptas but the FL 10x32 is one of my favorite binos. Let us know if you prefer the NL 12x42. The finicky eye placement and the glare issue of the NLs were deal-breakers for me.