Forever Black works great. However, they guarantee it for like a year. I just put it on my XJ, TJ and my Pathfinder. It really looks good and it dried in about twenty minutes. It states for a darker more glossy look, you need to apply a second coat which I did. I even washed the XJ about 40 minutes later and it held the luster. As for the price, it was pretty reasonable on Ebay. I bought two eight ounce bottles and after doing all three cars, to include the bumpers, door handles, and the trims, I still haven't opened the second bottle. We will see how long the luster holds, but so far I think it's great. I paid around fourteen bucks for the two bottles.