Here is your option scenario: You have a moderate size Cave scope, make it an 8" GEM Newt. The scope is in nice condition. You are given some options for factory original parts such as the Finder and Focuser for starters. Which of the following would you choose and why?
For the finder, both are 8X50 and in equally nice condition. The optics, mechanics, and cosmetics are the same condition. Both have a turnable eyepiece focus, both are the same basic mechanical configuration.
One is labeled the venerable cursive HOC, which I feel is yet undetermined for manufacturer. This one is slightly longer. It is not directly labeled as Cave, but is an original Cave finder. It has a nice round Japan Inspection sticker. Slightly thicker cross hairs. Slightly larger AFOV and thus TFOV with the same magnification.
The other is labeled AMA (Tak?). This one has ASTROLA on the objective cell, no inspection sticker. This one has more focus range. Both finders go to infinity but the AMA has more room past that. The AMA has a blue ring around the field stop, minor but there.
Equal resolution and comfort/eye relief.
HOC on the left, AMA on the right.
Your choice, which would you choose? If there some specific deciding factor you still need to know, ask.
Focuser is next and will a much more interesting choice.