The V6 is some of the nicest hunting glass Zeiss offers. The V8 is "better", but honestly, IMO, it's not really a huge step-up over the V6 to justify the huge price jump. I have a bunch of V4's and the glass is great in them, and several of the old Conquest MC's that had actual SCHOTT glass in them (assembled in USA). Looked through a few V6's. And own an LRP S3 6-36x56. The LRP S3 is insane glass for the money. Yes, the entire scope is built by LOW in Japan...Same with the Conquest V4 scopes. The same place that builds the Vortex Razor scopes, and the glass for Nightforce and many other top-tier brands of optics.
If you are looking for a nice super light hunting scope with exposed turrets, and don't mind SFP and MOA adjustments, then the V6 is going to an excellent option.
If you are looking for a really nice tactical scope with big turrets, tons of adjustment, and don't mind a big chunky heavy monster scope, then the LRP S3 is a solid option. If your hunting rifle is light enough, then you can get away with the LRP S3 and still be fine on weight.
Glass comparison will not be that far off. There will be differences, of course, based on different manufactures and lens coatings, etc... But the glass in my LRP S3 is absolutely top-notch for it's price tag.