Replacing a toilet flange
I have a cast iron toilet drain and the flange is a combination of cracked and disgusting so while I'm redoing my floors I figured I'd replace it. Oateys has two PVC flanges with neoprene looking gaskets that sit inside the 4" pipe and seal it off. One of them has bolts that you tighten and it expands the gasket to fit while the other one screws into place and the tighter you screw, the tighter the seal. Anyone ever use these and which is better? They both sit inside the pipe.
My other question is since I probably need to get rid of the existing flange, what's the best way to do that?