Thank you so much for taking the time to explain the basis for your comment. I now understand where you were coming form w that small part of your excellent review.My comment about the 36mm tube was simply personal preference - this is an uncommon size and therefore mounts and rings are limited. I play musical chairs with my scopes and mounts more often than I ought and the fact that I can't just swap the ZCO with the rest is limiting. There is nothing inherently wrong with a 36mm tube, but what are we gaining with that? One could argue with larger tube diameter we are getting greater travel and extreme elevation performance, but based on what I saw in testing I did not "see" this increase, Vortex G3 has greater elevation travel and actually performed "better" to my eyes than ZCO and TT crushed the competition in edge sharpness, keep in mind that "better" is relative in this case, by no means did the ZCO perform poorly, but given the design intent I was expecting to see a significant improvement over the 34mm counterparts and I just did not see that. When I sell a scope I do not sometimes sell the mount or rings as I use those for another scope; however, if I buy a 36mm Spuhr mount for the ZCO and end up selling the ZCO what am I going to use that mount for, a $10k Hensoldt? When all is said and done, I care more about the reticle than I do about the tube size, but reticle is very much subjective and I tried not to harp on that too much in this review, if ZCO had a reticle that was more to my liking I think I would have more of them on my rifles.