Budget grow tent versus so called brand names

There are many different makes of grow tent on the market ranging from quite expensive brand names to cheaper no name models. To a certain degree i think you do get what you you pay for, but from my experience in dealing with all these makes i find the cheaper grow tents tend to be just as well made if not better with thicker material. The only upside if you would call it that to alot of the brand names is the fact that they often come with alot of ducting outlets for heat and air extraction. This is not always a good thing though because more openings means more space for smells to escape, all in all in most cases i have found budget grow tents to offer much higher value for money because of a much cheaper price and of similar if not better quality.