All-Around Tire?

I’m new here. Just bought a 2015 XP 4 1000 and am researching all-terrain tires. I’m looking for the best all-round tire for all riding except the sand dunes. Triple S Polaris in Utah recommends the EFX Motohammer. Some of you have talked about the Tensor Regulator.

Thoughts? Pros and Cons? 30" or 31"? 14" or 15"? I appreciate your thoughts and experience.