I too have the option of using a macerator (FLo-Jet portable) or the 3" hose..
I like the speed of the 3" dump and the easy of using it. Many do not, it does not bother at all to use this hose.. Many are Bothered by what's inside the hose. I'm not.. Because I'm not INSIDE the hose,, I'm outside it. :)
I have read ONE and I stress ONE case where someone who uses a macerator had a problem. Just ONE. So, what more can I say. I suspect he was doing something wrong like leaving the valve open when hooked up.. Not recommended. Or not properly flushing the tank, which I never do with the 3" but do do with the Macerator.
I do use the macerator when.. for example.. it' sa long way, to the dump site, longer, than my hose. The reason is my Macerator hose is 50' and I can extend 25 more.. Can't go that far with the 3" hoses on board.