I still don't see why people pay more for the MAC Ultimate when the Mighty (Or professional as they now call it) series is more nimble and very similar in performance. I know a few people who own the ultimate series only because they were under the impression that since its heavier and costs more and has a seemingly thicker bolster that it must be better. In the order that you have listed (I have owned/own two of three and used the other) I would go this way Zwilling BK>Fusion>Mac Ultimate, If you were talking about the MAC Pro I would switch it with the Fusion. If you are concerned about cheap writing on the side then you won't be very happy with the Miyabi either as the red paint and writing comes off pretty easily. On the other side of things, if you can be upsold from the price difference between the mighty and the ultimate, you should be able to upsell yourself from the Ultimate to the Zwilling Bob Kramer. If you don't like the profile or feel of the Kramer however (as it seems to be a love/hate thing) Mac Mighty is a better performer, Miyabi Fusion has better F & F (although the scales on one of the parers we use in the kitchen started protruding for whatever reason and thus required replacement).
The upside of the Brick & Mortar scenario limitation that you have given us should also be something you take full advantage of. I know you will be going to SLT for two of those knives, and their return policy is/was quite liberal, so try out one, and if you are not satisficed, then try the other. I've used or owned at least one of pretty much every brand they sold, and the only ones I still own are the Shun Elite Santoku, Zwilling BK, Masahiro MVH 240 (also worth looking into if you want a kickass performer with no frills attached), and Shun Classic Parer. I had a hard time deciding between the Birchwood and the ZBK, but in the end, the distal taper and carbon steel won me over. Make sure you take your time and play around with them!
PS From my experience great chefs don't always use great knives, but it seems they are getting better in that regard as time passes; Thomas Keller used to use MAC, now it seems he uses Nenoxs.