I'm curious and also looking for advice from experience here ...

I have built a responsive website. I have produced it for large screen + tablet + mobile.

Given that the large screen templates provided by Xara are designed for the 'not full width' layout, and that only a few of their templates are actually for three size variants and not two, I was wondering what your recommendation is to how many variants are practical?

Is three necessary, or just over the top / more to manage and slower to build?

What mileage (re customer, end user, google?) is there really in delivering three variants to the customer rather than two (a full screen and a mobile I guess).

many thanks in advance.