This looks neat. A moveable, easily serviceable, lightweight, comfy Thetford toilet for MH and trailers. I believe it's only available in Europe so far, but don't quote me. It just won an IDEA award too, for it's nice design. They called it a drop-in cassette toilet. Personally I wouldn't call any toilet category "drop-in" but that's just me.
It's located here: http://www.thetford-europe.com/the/t...atures_c400_en
Seems to be a neat option if yours has gone bad, or if you want something that's even more compact than your original.