Which is the fairest of them all?
I’m not a fan of bar end mirrors. They’re usually constructed from inferior material and are badly designed. I also think they look dumb. Oh, and they give you a wonderful view of your elbow, not necessarily the traffic behind you.
Here are a few that I’m considering.

All the good stuff is made abroad. Halcyon “Stadium” mirror. Made in England. Stainless steel.
Round mirrors are the way to go. Classic.

Oberon mirror. Made in the United Kingdom. Anodized stainless steel. Looks sharp.


CRG Lane Splitter Mirror. Made in California. Black anodized billeted aluminum.