Yes I use changs liquid for every shade, but NOT on nexxzrT, if youre looking for something in a vita shade, Im afraid that is an abstract idea. I think for the most part the colors are just diluted hues. Use them just like stains or porcelain. Make chips of each shade at full saturation, then if you need to add a drop of b2 to your c3 to get some yellow, or add some a2 to your d2 to limit the brown.. then make chips of those. If you want perfect shades I dont think theres an out of the bottle remedy. Ive tried the ivoclar stains and they are good, but cant justify buying a whole set and experimenting too much, I have good luck with the changs. Its the most intense ive found, but havent tried many others, only amanns, sagemax colors, and a few ivoclar. Ivoclar is pushing the nexxzrT liquids but unless they are a different formula, like I said before, they dont saturate very much and are muted or 'pastel' colors after firing on nexxzr+.