Maybe its a ford vs chevy question but something must be better than wax rings for the toilet flange. yes I know wax rings can work fine IF ........ a lot of conditions are met, sorta (my opinion) like wood siding (compared to Hardie) is great IF... primed on all side, no cracks ,,,,,,,, inspectors probably see the toilet failures (rot, water) and maybe not whats causing it since the seal is hidden) non wax ring choices seem to be 1. fernco coupling, and 2. fluidmaster both of which require the device to glue onto the toilet outlet horn area and 3. sani seal, which sounds new to me but looks like the answer. any opinions?