We had a 2007 Roadtrek 210 Popular for six plus years & the Macerator worked great all those years, never a problem other than going with a different more flexible hose. Bought a 2013 LTV Unity TB last June & came standard with 3" slinky, we opted to go with the optional Macerator Pump & have never used the slinky which is available should we ever need it. Have never used the 3" slinky & would be a new experience for me should the situation ever come up. We love the Macerator.