my truck came with aqualu tub, it has taken some hits that steel would have creased at. it is way thicker and stronger than the stock thickness steel. wally's tubs may be a different story, though.
where in canada are you? in the west, maybe the recurrance of corrosion might not be a huge concern, I'm from nova scotia originally, and replacing steel with steel is a delaying tactic.
if I was going to pay 3000 for a tub, be it steel, AL or composite, I'd want to make sure I wasn't going to pay it twice... which negates the steel!
if gozzard is close/easy for you, don't even think twice, folks that nay say are thinking of cheap 'glass tubs, gozzard are way tougher, marine hull grade, and formed more accurately to the factory contours.
It's not really that the Malottes aren't strong. I think they are also Marine grade glass, at least on the exterior. The molding just sucks. Mike Gozzard actually forms all the factory contours of the tub, so it closely resembles the form of the original steel tub. He also puts a lot more time into reinforcement. With the Malotte, you're looking at cutting all your own holes in the firewall/dash, bracing your door posts if you use hard doors, etc. The Gozzard's are fawkin' nice. When I destroy mine, I hope to purchase a Gozzard.