We recently purchased a unit from these guys. Great to deal with, very obliging.
Our second run out with it, the festival we were at was in the path of some average weather overnight. A roof was lifted off a house not too far away and trees down all over the place. When I returned to the site, I was fully expecting to be picking up the pieces of what was left. Most of the festivals own gazebos had been quite severely damaged and they were mostly in protected areas. I was concerned, to say the least. Turns out I should have saved that energy for something more constructive, like leaving some feedback in a place like this. I occasioned one small rip to the canopy, which is totally fixable and a very small price to pay. I should also note that the other gazebos at the festival were a more expensive brand I researched before deciding on Mountain Shade, glad I made the right choice!
From what I've seen, Mountain Shade is where your money is best spent.