A wetsuit is the one piece of gear where fit matters more than brand. A cheap suit that fits will keep you warmer than an expensive one with a gap at the lower back. So start with the right thickness, then pick the suit that matches your body.
TL;DR: For Portugal, Morocco and most of Europe from spring to autumn, buy a 3/2mm full suit. The O'Neill Epic is the value pick. Step up to a chest-zip like the Rip Curl Dawn Patrol once you surf regularly.


