Its a long story but consider if something is wrong with your Kahles your probably not going to have it for a few months. Other top tier brands you can measure that in days or weeks. I just don't think swaro/kahles US understands the level of service appropriate or have the capabilities in place to compete with ZCO and TT in this >$4000 tier.
I get that ZCO service is stellar and can attest to as much. I had to use ZCO service and other than the $140 it cost me to ship it properly insured, and the fact that they WILL NOT put anything in writing documenting their initial inspection findings, repairs, collimation tests, etc, the service was good. I even got a coveted ZCO hat in the process. Jeff personally called me to discuss the issue and Lori called me to arrange the shipping back to me. Nice. Of course when you never put anything in writing, its easy to deny it ever happened. (Things that make you go hmmmm.) I'm a cynic I know.
All that said, I know dozens of competitiors with Alpha tier glass. All of them have at least a second tier (NF,RG3,K525, etc) optic as backup if not other alphas. Things break. Triggers, scopes, actions, chassis, etc. Top level competitiors have backups for everything. Is a two week repair turnarround better than a two to four month one? Yes. Prepare accordingly regardless.
I know my opinion means nothing as that has already been established above. But. When I got my ZCO527, I thought it was like a big screen TV in 4k. That was compared to the NF735, K525, RG3, Mk5, Bushy ET's I had owned previously. The significantly larger ocular yielded virtually no black ring around the image and the resolution was amazing. I still stand behind the resolution of the 527, but when you look through a 527 and K540 back to back; side by side at the same magnification, the 527 feels like you're looking through a paper towel tube. That is what Kahles calls the "game changer". It is shockingly obvious to anyone who has actually looked through one. I know this is CRAZY and nobody with a ZCO or TT would ever fathom that their viewing experience is the least bit "tunneled"; that is until they look through a K540. Personally, I think the real game changer is Kahles controls. No one else in the industry has the control layout Kahles has. If you shoot at 12-15x and never dial, full stop, doesn't matter. If you dial as much as you possibly can and want to run as much magnification as the atmospherics will allow, the Kahles controls, LSW, AND the field of view are the real game changer....in my opinion.