I have a dometic vaccuflush system in our Southwind. It includes a pump and the macerator. replaced it 4 times so far. we don't flush any toilet paper down it at all. I would never get a built in macerator in a rig ever again. Clogs in a heartbeat. I know this sounds very negative, but it is a horrid system, and a money pit, not to mention, you can't get the waste smell out from underneath your rig after it breaks.
Just spent the last 4 days at Desert Edge, very nice park, clean facilities, friendly people, both employees and guests. Lots aren''t huge, but they are nice, with picnic tables. Downside, only one person in the office, so if you are trying to call, you might not get an answer right away. All in all, this is a Park I would definitely stay in again.