Hello!  I am Brent Battaglia, I'm a professional tile setter and have been for 35 years. I offer a "no crack, no caulk" shower system with a 25-year warranty!  It's a big deal to never have to put caulk in your shower area, as where there is caulk there usually is mold to follow.  My shower pan system prevents cracking, so caulking is never needed and it's easier to keep clean. This method I use I believe to be superior over all others, and this is the only shower system I use because they don't crack. I've installed many different kinds of shower systems, and I feel they all are susceptible to cracking after a while.  This system is proven to be effective against cracks and to never have to use caulks.  The difference is what's behind your tile. ​​​