... my experiences with Jabsco manual toilets has not been too good.
Can't tell if understatement or general consensus.

Their reputation is poor, for sure. Could be the design, or maybe there's just so many out there. A toilet is something that has to work every time, tho. Or you will hate it. Seems like the
sine qua non is Lavac. Big old Whale 30gpm fire pump. Big old price tag. That Raritan looks like a good mid-range choice; it converts easily to electric, IIRC? That was our chosen model ... until we went crazy with the whole head concept.
