Thanks for the discussion guys. As Longstud and others have commented, right now, Kahles K540i and TT735 are 2 of THE best riflescopes money can buy. I don't sell ZCO but they too are great scopes. In the end, you buy what you can afford and the one that ticks off your preferences.
I was an S&B fanboy 20 years ago, but unfortunately they have done very little in developing new scopes from the ground up for many many years. Point in case IS their newer 6-36x56. They at long last removed the illumination knob from the back of the rear tube, but instead of designing it from scratch, they literally "cut and pasted" that same old knob onto the left side parallax knob.... They really could have designed it from the ground up, instead of using the same old "dated" knob and just moving it. I do like their glass, and some reticles need updating on some models.
As for warranty - I do agree TT is AMAZING to deal with and its nice that they're in Canada - and they emply some of THE nicest people in the industry. BUT, Kahles warranty is ALSO pretty amazing. When you purchase from me, I pay the shipping cost baco to Kahles (Swarovski) in Rhode Island, and they pay return shipping anyway.
The beauty of Swaro/Kahles warranty, is that they now have metal 3D printers that can print ANY part for ANY product they have ever made - obsolete or not, as they have all the "blueprints" of everything they ever manufactired. So in essence, they can now repair any scope, no matter the age.
And as Longstud commented, their scopes are normally pretty bulletproof. They don't see lots of warranty issues. But then, neither does TT normally - unless you drop scopes a lot. LOL
Anyway, thanks for all the inputs - always nice to see differing opinions and discussion. Keeps the industry interesting.