If I needed a significant amount of grey water moved, I would do the collapsible bladder.
The portable macerator is the best thing if you need to go around a corner, up a hill, up into a truck bed, etc. I did the "lift method" at home a few times and it was never as simple as it should be. First, those stinky slinkies aren't sturdy enough to lift easily - it takes multiple "walks" down the length to get them to empty partially. Second, if you need the extra reach, they always leak at the connection when you lift.
With those two items, you could extend a dry camping experience nicely. A one hour trip to a dump station would be a no biggie (pick up some fresh groceries while you're out).
