Whatever you do, DO NOT get a rectangular shaped pop-up hut! I made the mistake a couple of years ago on a Clam Expedition that had a floor print of 5'x6'. It had walls that are square on the short side and rectangle on the long side. This meant that the hubs on the square sides are shorter and the hubs on the rectangular sides are longer. When you go to set up the hut, the square side hubs often tangle with the poles of the rectangular side.
I don't think they make huts with that odd shape anymore. All the hubs and poles of pop-up huts with a square floor print are equal length and they have little issue with tangles.
I've already snapped a couple of poles on my Clam Expedition because of that issue...it cost $24 for replacement hub and pole and another $20 for shipping. At that price, I'm just waiting for end of season sale to get a new pop-up...
For pop-up tents, I heard Eskimo and Clam are two reputable brands with durable products. Not sure about HT pop-ups...but some of the HT products are not very durable.