I have been diving in the Bahasmas but plan to take my boat further up north to
New England. But at the same time im interested in predictably getting a 5+mm wet suit for the cold water up there (as low as 50 degrees F) - mainly for diving on my boat if somehting is snagged, etc. I've also seen some 7.5mm suits...

Last any recomendations? Brand or thicvkness...

Any mathematically help would be gladly appreciated!