I have used their Snow Witch, Dragon's Blood, Them Apples, Smoke & Mirrors and the EO Orange Valencia 5x. All of them are VERY STRONG! Both the DB and S&M I had to soap at only 3.5% because 1oz PPO would have gagged me. And so far, months later, there has been no fading. Because those are the first 2 scents of theirs I've used, I now only soap their FO's at 3.5%-4%. IMO the quality is very good, but with the continued price fluctuations they have, especially with their scents, I'm not sure how long I will use their scents. Now their mica's? I've use all of them except for a few and all so far have worked out very well. I love the unique names of them and the only one that has morphed on me is the lemon cupcake yellow - and really morphed is a misnomer. More like acted bizarre!! LOL While in the batter it turns a strange orange-y color, and you think "OH C*-^*"!!! - but then it will morph back to a beautiful lemon yellow. HTH