Flange recommendation needed. Old flange rusted. New floor higher than older pvc pipe lip
If you need the extra height, just install a replacement flange that fits inside the existing pipe. There's both screw-tightening (where tightening bolts pushes a rubber gasket out to lock in place) 



(Response to edit)

If you can get underneath (as your new picture depicts), you can avoid using an insert flange entirely. Cut the pipe off somewhere below, add a regular flange to a new pipe and just add a new coupler to attach the new to the old. Easier (and cheaper) than an insert.