Macerator Pump - Perm or Portable

I have a Flojet Portable, which has not been taken off since I bought my motor home. I have it hard wired directly to the batteries and then I put a switch in the bay where the floret is, plus I added another switch in the bedroom. So, if we are at a campground with full hookups, I have the garden hose with an adapter placed in the sewer drain. If the grey tank is getting full as the family is taking showers, I can just switch on the Flojet from the bedroom and empty the grey tank. I have never used the 3 inch slinky. Not once. I attached the Flojet and for nearly 10 years, I have used nothing buy the macerator. I also have a drain I installed in my garage and run the hose in there and drain the tanks while I am home. It works great!