I loved my 10x42 Conquest HD's so much (which I picked up from somebody on here used, which replaced some DiamondBacks) that I instantly thought "Wow! I gotta see what looking thru some 15's of this is like!" So I later on bought the 15's too! (replaced the Vultures).
I like the way their focus ring works! Doesn't take as much movement to hurry up and whip into focus in a rush/hurry. And only in Open-Country Desert Hills terrain do I ever bother bringing the 15's, because the 10's are just that good all by themselves for most of the other terrain types I goto that are more chaparral and thicker.
Outdoorsman's Micro-Pan Head, with Tall Bino Adapter.
P.S. biggest difference you'll notice compared to those other you have... is... beside the clarity and contrast... the Depth of Field of what is in focus within the FOV, in terms of what is in front of and behind the object you're focused on.
With those Vultures, the depth of field SUCKS by comparison. Very narrow depth of field comparatively speaking. They'll get the job done, but that Depth of Field makes everything more efficient, because your eyes/brain is just taking in soo much more information from what in that FOV. A narrow depth of field makes you have to use the focus wheel more to fish around for focus to see more what's in front of where you're pointing, and behind where you're pointing the binos.
Whereas with the Zeiss I'm quickly seeing things WELL in front of and WELL behind what I'm most focused upon in the image with the focus wheel.
Even if you don't have a Tripod yet? Get the Outdoorsman's Bino Stud Adapter and install it. I find myself always hooking one of my fingers over that post when doing quick bino-checks hand-holding it. That extra finger hooking onto that post let's ya more easily do quick 1-handed glassing checks by hand. If I didn't have that post on there, I'd likely have to use two-hands in order to be able to also manipulate the focus ring all with just one hand. It just makes hand holding a degree more stable for some reason. Probably because it give me more leverage for holding onto it, rather than just fingers around the one barrel.