I've tested a lot of self-hardening paste, but I must admit that this is the best. I have no share in GIOTTO ^^ !!! Most: The performance is there: with an equal amount it has more output (I make more objects: identity comparison) Quality: the grain is fine, the surface remains very flat, white remains white when dry. The strength: Even thin shock resistance is good (falling to the ground, facet) It happened to me to be the case when I sand the edges on other brands, this one holds up! Of course we should not go there as a raw on fine parts anyway, but even on large parts I had the case with other brands! Drying: allow 48 hours! can accelerate drying in a warm place (boiler room: oven I have not tried). No drying shrinkage! Painting: easy! it stretches the dough well and "drink" not so performance is good here too, even with light colors rendering is beautiful. Acrylic paint gives a good satin finish which avoids varnish! (Provided not to buy the morning! ^^) The price: by that amount, with that provider: after ferreted on the net is the best ... hope it will maintain this advantage ^^ Finally the part I like least is common to all these pasta and when working with the punch (in my case!) ... And sanding with emery cloth: yuck and re yuck !!! As I do not like it and I'm a little fainéasse I found something (I must say, in my defense, I'm doing good amounts of castings !!!) I paid a small machine sand the nails, cheap, on a site known ^^ (under 15 at Amazon) and it works with the fire of God! Certainly, it is always a part of the job as messy but it can not escape except summer if we start on the lawn (when it has a ;-) Well, you burst: there are ideas to spare with this pasta there!