I have a small "50's bathroom that has the toilet very close to the tub. The toilet is a 14 in rough in and has to be replaced. Money is an issue, so I can't go crazy. I would like a short toilet - wall to front edge -so you can get in the tub - and a good flush. My plumbing store says that 14 in rough ins didn't flush well. What's going to work better: Unifit?, offset flange and power flush??? This is a second floor bath and I don't want problems! Please help!