Not sure I agree with the advice to get one thats tight. IMO When you start to paddle and then warm up your shoulders and arms pump up (with blood) and the suit will get even tighter. If its too tight youll be restricting blood flow and your arms will fatigue.
Get one that fits properly/snug but not tight. The idea is that its a wet suit, ie its big enough to let in a layer of water, but fitted enough that it doesnt get flushed or wrinkle up at your joints..
I have one of these Xcels. but its a 3/2, if its on the cold side i wear one of these or a regular thermal rash vest underneath.
the excel size chart is a pretty good guide. I was a but dubious about mail order but this chart did the job. MS will swap it for a different size so long as it hasn’t been used.
I was always a 5/3 in the uk or 6mm for winter in the north east. Now I live in warmer climes a 3/2 or a shortie for winter and boardies in summer.
What do people ride? Longboard or shortboard?