I have had mostly positive feedback with Crystal Coat. But have had a couple issues which I mainly contribute to shelf life of the product.
First experience was back around April. I bought a small 4oz bottle and used it on my personal cars with great success and ease of use. Also awesome durability! Fast forward to August. I had a clients C7ZO6 for a full correction and wheels off coating etc etc. I planned to use BF on the whole car. I did the wheels working in small areas and noticed it was a bit difficult to wipe off but still got the job done without issue. Once I moved onto the paint that's when it became evident that there was a issue. I applied it in a small area and went to wipe off immediately and it was already like glue. Due to time constraints I ended up using PBL V2. No biggie, happy customer!
I called Nick and explained what was going on and admitted how old the bottle was and that it was stored in my garage and not indoors. He graciously sent me a new 8oz bottle this time free of charge. So right after that I had 2 more cars to coat. Both I did with BF with great success again!
Jag XJL with BFCC
Monte SS with BFCC
Now here is where it gets interesting. I haven't used that bottle I opened back in August (mainly because of the new Wolfgang Uber Coating) till just the other day. It's been stored inside the whole time mind you. I wanted to test it on top of Essence to see how it would react. It acted just like my first bottle did after being opened for a few months. Although not as bad. I was able to work in really small areas and got a couple panels done and they look great and are holding up awesome so far. I personally think the product has a short shelf life ONCE OPENED. Just my .02. I don't think it's a bad product in the least bit.