Based on a quick review of the manufacturers’ websites and their local distributors, I have the impression that Canadians are better off with TruDesign (purchasable at Pumps & Plumbing – Victory Products ), while U.S. buyers may want to stick with Marelon.
You can get TruDesign in the U.S. from Marine Plumbing Components & Hardware | Boat Plumbing Parts & Fittings .
However, on a quick skim-through, it looks like the Forespar Marelon components purchased at Marelon Plumbing Overview might be cheaper for U.S. purchasers.
– Bob