Agreed that macerator toilets have worked well for a long time. Previous boat had that type.
On the vac-flush head, we had several occasions where the "solids" would easily plug the vac-flush system, and when the black tank and vacuum pump is about 15 feet away from the toilet, unpluggig a 3" dia hose snaked thru the bowels of a boat or RV can be challenging. Especially challenging to my gag reflex....
Is this a case of the RV having a bath and a half, and only one of them sits over the black tank?