I'm on my 4th class A moho in 36 years. We have a thetford aquamagic Bravura, low, parchment. I have tried the ceramic toilets and like those too, but the plumbing wears out sooner on rv toilets so they have to be replaced more often than house hold ones. The bowls on both plastic and ceramic never fail, just the plumbing parts, and of course the one I have, well it seems there are never parts available for it. I would say the average life is about 10 years. We are on our 2nd Bravura in this moho of 17 years. I like the pulse flush, it seems to do a better job than just a regular flush. We don't find a need for the extra sprayer with the pulse flush, and the sprayer is just extra junk in a small space. Good luck on your choice.