Oh wow..
Studio Fix (Nw20) works great for me, but I noticed that sometimes, it wears off faster than I'd like. Even though I've got on a primer. It also seems chalky. Which is why i now am in love with.......
Mineralized Foundation: I use the light/medium and the finish is just amazing. I barely reach for the Studio Fix anymore..
Studio Tech: OMG, I'll NEVER buy this again. It reminds me of old Max Factor PanCake makeup. Plus, it got really odd in the compact, semi clumpy dry texture.. I wasted alot of this product scraping this "layer" off to get to usable product. ANNOYING! However, I was able to use this as a dupe for concealer when I needed too.