I swim open water in SF Bay and nearby lakes. Lifelong swimmer, and have done OW since 2020. For the cold water I use the Roka Maverick, because it is lightweight suit but enough to keep me warm in the chilly bay water. The rubber/neoprene used around the arms, shoulders and chest is of an extremely flexible composition, so you don't get any binding or restriction when swimming. This is my second Roka, and I've been impressed. I'm not familiar with all the suits mentioned so far, but would mention making certain to try everything on and ensure you have full shoulder mobility without chafing or binding before you make a purchase decision. Good luck!