After using the 50X eyepieces in the Kowa Highlander Prominar binocular for both observing wildlife and celestial objects I find that I use the 32X eyepieces more than the 50X, primarily for the wider field that the 32X provide. The image in the 50X eyepieces is very high quality.
Pros: nice image, fits the proprietary Kowa binocular
Cons: pricey
This review was written in the old system and had content requirements that are different than reviews written today.