The company I work for sells Mapei LFT for thinset. I use the rapid setting mortar as well. As well as their crack isolation membrane. They work great. The beef I have with Mapei is their grout. The colors know how to be inconsistent and unfortunately the company I work for also sells the rapid setting grout. It dries way too fast, I don't know anyone who can mix an entire bag and grout without it drying up in the bucket halfway through. This also creates consistency issues with the color of the grout. I've found a way around this. I shake up the bag before I even mix it. Then I mix half a bag and just grout pretty quickly. Repeat process. The fast drying isn't all bad because you can do trim and move furniture back without worrying about stepping on the grout lines. It has it's pros and cons.