Mike H could you elaborate as to your choice of the Columbus versus the Maggie... If you had bought based on design elements in the Autohome line.
So . . . I didn't really pick out the Columbus over the Maggiolina; I bought the tent from my Unimog buddy George when he needed some spare charge.
That said, though, I know both tents and would have chosen the Columbus over the Maggie in a free choice situation. A small reason is that the Columbus is a little easier to deploy and store. Not a lot, mind you, and the Maggiolina is a very easy-to-use RTT, but it just doesn't get any easier than the Columbus.
The bigger factor, though, is the height at the tallest point. You can stand on two feet in the Columbus. You can't stand up straight, of course, but you can stand up well enough to pull a pair of pants on and off, which I value all out of proportion, I suppose. It also seems a tiny bit easier to get in and out of the Columbus if there's a flat surface under the doors; less important if all you can reach is a ladder.
I will say I like the looks of the Maggie better; the triangle-shaped Columbus is a little weird to my thinking. But the function is worth it.
Just my personal opinions, obviously.