You got what worked for you. That's what counts.
Now, what I do question is the quality of the other tents. I really haven't seen any design Or material changes since I bought my Mars 2x4 tent 2yrs ago this next month.. Plain and simple, the
material of the Mars tents and I suspect Vivosun to be similar, are just
NOT the same quality as the Gorilla. The stitching in the Mars tent is
very subpar to the Gorilla. After using Vivo circulation fans and exhaust fans I don't think I would give their tents much of a chance to buy, personally.
I correlate the tents like choosing between Chevrolet and Cadillac when
I was a kid. Are you willing to pay more money for a better product?
I know that if I were to buy another 4X4 tent or larger, It would not be Mars or Vivosun. Material specs do come into play, but the most important thing on that size of tent is the design.
Don't get me wrong! I do quite like my two Mars tents! They are plainly just not the same quality of tent.