I have used Nikon Aculon 8x42 for the past year. This is my first pair of binoculars. I enjoyed them a few times during star parties and other events. Not having other binoculars to compare, I was happy. Then one night a member from the local club showed me a Swarovski CL 8x30. Wow, what a difference in clarity. I was blown away; by the price too. 16x the price of my Aculon which I am not prepared to pay. So recently I got a pair of Kowa 10x50 SV II. Last night I looked at the moon and I saw a lot of CA. Nikon had vary little CA in comparison. But most important to me was that I didn't like them. I guess because FOV is small. After using them for about 10min I could feel my eyes very tired. I never experienced this with my Nikons. They almost gave me a headache.
So my question is: is there something I need/could change to make the viewing more pleasurable?
As an alternative, what options do I have for the same price in 10x50? I checked (on paper) Nikon Monarch 7 10x42 but they are outside my price range and they are not 50mm.
I am open to any suggestions.