We've only had one patient where we had to install a Saniflo, they were only on for about three years before getting a transplant but we didn't have any issues with it during that time. It was in a garage conversion so we were able to install it in a separate room to the machine, along with the RO. I don't remember which model it was but I think we went for a unit designed for basin/shower/bath as we didn't need the macerator.
We have fitted loads of waste pumps.
The original ones we used were OK but gunged up fairly quickly for certain patients causing occasional smelly leaks - I think they were the Sanishower/sanidouche.
We now use the Sanivite grey water pump which have been trouble free.