I think the Showoff is the best buy; it's strong aluminum, one person can set it up, art buyers like the roominess and high ceiling, part replacement is available, can customize ( Idid), and it is fire retardant. And amazingly it is made in Clearwater USA.
My experience had been very good with the showoff, it has withstood weather conditions when other canopies did not fare as well.
I also have their display panels and I love the versatility and self sealing hook holes. I have recommended the showoff to friends.