Robert...
If you are going to get curiosity let the best of you, I'd go a different direction. Have been using my EDG 8X42 a lot lately and....pretty easy to tell the difference optically and operationally between it and the Tract and Maven 8X42s. In fact the EDG may be becoming one of my top two. It's quite the binocular. I don't know why I waited so long to purchase one. It took me a while to warm up to it. Objective covers are a joke, ocular adjustment completely strange, hinge-tension a little to light... Focus adjustment is IMO the ONLY 10 out there. It IS a 10. Relatively small frame for a 8X42 as well. Optics...VERY pleasing to the eye.
Tract vs Endeavor ED II...
I probably am Not going to keep the Tract 8X42 and the Vanguard Endeavor ED II is the reason why. This is the binocular I keep in the truck and it gets a LOT of usage! I can find NO situation where the Tract is a better binocular. FOV is exactly the same. ED II focus adjustment is smoother. ED II has a locking diopter adjustment, Tract does not. ED II comes with a nice case, Tract comes with no case. Optically the ED II is as good or better and certainly has a flatter field. Warranty-same. And if I were buying now...ED II is about $300?? No brainer....