Having the macerator has saved me a couple of times. Sometimes, the sewer connections are SO far back my slinky will not reach as I can go to about the end of the motorhome (back bumper area). The macerator will go a little further so that will dictate which one I use.
Also, the macerator end cap has a thread on the end so I can go as far as a length of hose will let me (50/100/200 feet).... depending on how much hose I need. I don't have an extra slinky.
I have had to clean out the macerator once as a friend's son visiting put a piece of gum on the toilet. Our toilet is also a macerator toilet so we have the double wammy when I use the wet bay macerator too!
MM.