I've owned all of them, the GSO 10, the Junglas, and the BK9. I still own the Junglas and it is my go to chopper. The BK9 works well but the grivory grips, well, they lacked grip. It does chop and baton very well.
The GSO 10 is a beast of a knife and made appropriately in 3V, with incredible ergos and great balance for a chopper. Hands down, a beautiful work of art useful tool with superb fit and finish, along with tremendous attention to detail.
Having said that, for real world use for most of us, I didn't see any advantage of beating on a $300.00+ GSO 10 vs beating on a $100.00+ Junglas. Both steels require maintenance and oiling so no advantage there. If I were using it daily to make a living, or spent weeks at a time in the field, then yes, the GSO 10 would be the one.
For the average outdoorsman like me who spends weekends outdoors and occasionally 3-5 days and maybe even a week in the woods now and again, the Junglas is the best bang for the buck.
I know Kabar (and Ethan) will stand behind the BK9 if something is not right. No worries there. I know Guy at Survive will stand behind his knives 100% as well. No worries there either.
The Esee Junglas, on the other hand has an unconditional (yes, unconditional) forever (yes forever) warranty. Can there be a better or longer warranty than that? My $.02