I'm very happy with my Trimetals. I bought it for the same reason as you; the old, wooden shed was falling down. I chose it over an Asgard simply because it had to go in the space previously occupied by the wooden one, and Trimetals made the only one I could find that was the right shape.
Mine will take a bike standing vertically on its wheel, but only in the middle at the back. I don't actually tend to put my good bikes in it, but it's pretty secure. Also, it's dry and not likely to fall down, which are two plus points over the old one!
Building it required a bit of planning, because it had to go back into a constricted space, so we couldn't necessarily get at all four sides. In the end, we did most of it in the middle of the lawn. It then took four of us, inside and pushing up on the roof, to walk it back into its final place. Quite a fun family project! Having previously had to lift all the various boxes and packages in which it arrived, I wasn't expecting to be able to move it.
It actually gains a few inches on each side over the old one. It's amazing what a difference those make.
