I have been using 444 for several months now and so far I am very pleased. I get both very good cold and hot throw when I use 10-12% FO. I heat the wax to 190, cool to 160 before adding FO and stir that VERY GENTLY for 2 full minutes, then cool to 135 and pour. Once I started using this process, I no longer had sink holes, cracking, or pulling. If I heat the glass container for just a couple of minutes in the oven at 170 before pouring, then I do not have frosting. Even without heating the container, frosting is very minimal if at all. Very happy overall and will continue to use.