[HoosierDaddy]

I and probably many others here have had experience with both. My travel trailer had separate tanks. I installed a tank rinse system in the black tank because it was necessary to clean out the solids that did not want to move. I have never needed a rinse out with either Newell. I think the additional capacity offered by Newells combined tank negates the necessity for separate tanks for extended "dry" camping. My wife and I can easily go 7-10 days before needing to dump. By then we need water as well. If we knew we were "dry" camping for longer we would be more conservative.
My Newell does not have a macerator but I know others that do.