Definitely need to try them on for yourself.
Best advice that can be given is get to a shop that stocks a few different types and try them all on. The best fitting and most comfortable one for you might not be the be the same for everyone else!
FWIW i tried on all of North, Naish & Mystics range and found the Mystic Warrior to be the most comfortable and best fit. That said, i though i'd be a medium-large and turned out to be an x-small!?!!

I'm very glad i didn't just go and order one based on their sizing list.