Even some of the Helly Hansen stuff leaks... but at least they will replace it if it does as will the other "name" brands like Gill and Gul etc.
For the money we've had good luck with the brands sold at (Canadian) Work Wear World outlets "Wetskins" was one brand they carried. Nice high pants and some decent collar and cuff design in the jacket, around $200 for a set.
But it's easy to spend big bucks here with no assurance that what you're getting is really as good as it ought to be until you test it out.
1984 Fast/Nicholson 345 "FastForward"
".. there is much you could do at sea with common sense.. and very little you could do without it.."
Capt G E Ericson (from "The Cruel Sea" by Nicholas Monsarrat)