I've had macerators on my previous coach and on my current one. IMHO, while it wouldn't be a deal breaker for me, ( I can buy and install one myself) I would not have a coach without it. Both of mine had a bypass line. The Exec came with one, I had to modify the Dynasty to put one on. The bypass line allows me to leave the grey water open all the time with the black closed. About every fourth day, I close the grey valve before showering. After the showers, I open the black valve and dump, then use the hot shower water to backflush the black. Takes a bit longer to dump than the stinky slinky but it's a cleaner way to dump. I can eat a sandwich while I wait for the tanks to empty. Who's in a hurry anyway......just sayin....Dennis