I just installed a Sterling shower and did tons of research beforehand. They appear to be very tough and durable. I did not read of any chronic cracking issues (other than receiving them cracked due to mishandling during shipping -- I personally had to re-order a panel 3 times due to this problem). It appears that if pre-fab showers/baths do crack, it will be around the drain, and that is always due to poor support. Put your tub in a mortar bed on a stable floor and that will eliminate that problem.