The qf 3 has lasted us ok. We are happy with it. Yes we now have the poles occasional setting in a curved pattern. We also tore 6 inches
of one zipper free. The sprayed on black lining on the inside cracked after about 3 years so not even close to woaterproof now. The clear plastic windows are not clear anymore.
It took me twenty minutes to resew the zipper portion that failed. If we need to look out the window , we just open the window and re shut it.
Even with these issues , I am happy with the product. It is 12 years old. It has been set well over 100 times. It was on the lower end of price compared to other manufactures when we got it.