Honestly, I placed my order for 2 retainers, one upper and one lower. Only after I placed my order did I come across this website with reviews. Their website it nice and the prices are very good compared to going to the dentist. The impression taking was not hard as I did both on my first try. As the company requests, I emailed 2 photos of my impressions for review. The videos are helpful and easy to follow. My emails were responded to in about 2 hours and they gave me the green light to ship my impressions back for free using the pre-paid return labels.
I did not rush my order, but felt I should have for only $25 more. I received my clear retainers about 5 days later and they fit really good. The edges were smooth and they snapped into place over my teeth.
It is unfortunate others had a different experience, but I can tell you mine was very good. Again, I waited to get my retainers before I left a review on this site. Sites like this can be misleading and people just want to bury a company at any chance they get. I will try to post photos of my retainers. I would recommend this company and products to anyone who is looking for a do it yourself approach to retainers.