re: Has anyone never seen the wax ring under a toilet?

I've recently adopted the "Sani Seal" foam ring because I'm not usually good enough to set the toilet just right on the first try. So far they've been great with no leaks or escaping sewer gas - more expensive but way more convenient than traditional wax.

Last project involved a tile floor where the tile guys set the tile high - a PVC spacer ring and the foam ring and some extra long bolts and it's solid as a toilet can be.