Is 5 star shine a good product?

I have used it and feel it is good, but not amazing. It has above average durability and an average shine. It can't be layered up like waxes and acrylics, so you can't get as "deep" a shine as those with multiple layers. Durability wise, mine held up for about 2 years. That's a lot of time saved as far as reapplying other waxes, but 5 years is pretty much not gonna happen unless your car never goes outside. (When I got it originally they only claimed 3 years)

It is very important to prep the paint properly, including using a clay bar, to get the best results. If it doesn't bond with your paint properly it isn't going to last.

Also I've seen some people who said they had terrible luck with it, but it turns out they were buying a knockoff version from ebay. So beware of cheap imitations.

So if you are looking to have a decent shine and not have to wax all the time, 5 Star Shine is a good option. Just be prepared to do it once a year or every other year instead of the 5 years.