For me the Strike Zone was one heck of a strong ball. No matter how much oil was out there this ball was way to strong for the condition (drilled pin over bridge, PSA in strong)
I just finished laying out my The One (similar to layout 2E on Brunswick drill sheets) This ball has more backend than the strike zone I have, but the Strike Zone is beyond any doubt the stronger ball.
The One gets great length, while the Strike Zone read VERY early and started hooking, The One reacts off the dry strongly.
I have never thrown the Vapor, but if you are looking for a step down, I'd probably go with the Vapor Zone if you want a earlier rolling ball (as already mentioned). The One probably won't be much weaker depending on the drill and cover prep, but it will definitely be longer and give a different look than either the Vapor or the Strike Zone.
The One VERY vaguely reminds of a "smokin inferno like" reaction only much smoother.