I usually use Art Clay Silver, but having heard about the extra working time possible with this new Flex PMC I decided to give it a try and was pleasantly surprised. I didn't notice any drying or cracking the whole time I was working with the clay, and I didn't have to moisten it at any time to get it back to the just-opened consistency. I was very pleased with the finished results, didn't notice any difference in the quality compared to my usual silver clay pieces. I will definitely consider buying it again for more complex designs that would benefit from extra time to handle the clay.