If lifetime warranty and excellent customer service are your main criteria, than everybody should only use Vortex products and not look at anything else.
I think we can safely assume that is not what you meant. We can have a discussion on whether it is a polite thing to crap on the brand you do not carry. Longer turnaround time is definitely a weakness for March. Long term customer support is not. They pretty much flat out said that everything will be supported. Perhaps it is an unspoken rule, but I do not see people in the industry talking about their competing brands a whole lot. For example, I do not think I have ever seen Jeff or Nick from ZCO say disparaging things about their competition. They say good things (justifiably so) about their own products, but do not disparage other brands.
Either way, both ZCO and March make very nice scopes, but emphasize different attributes. Depending on what you need, March may work better or ZCO may work better. It really comes down to what matters most to you.
As much as I like March scopes, I do not only shoot with March. If anything, I use Tangents more than other scopes I have and there are quite a few other scopes here. I do have a couple of Marches, a Leupold or two, several Vortex scopes, etc.
They are all chosen for specific guns for a specific reason that makes me think they are the best fit. Not once did I consider service turn around time as a criteria for selecting the right scope for the right application.
ILya
