
I think that composting unit is more for a full timer.
Since I'm basically a weekend camper, I prefer the Luggable Loo, which I am happy to bag and trash every morning of my stay...no spills or cranking or anything like that. I don't like the idea of leaving either other type of potty uncleaned until the next trip nor do I like the possibility of sloshing home or -heaven forbid- on me. ...Nope!
While the initial cash outlay for the Luggable Loo is minimal, at about $2 a bag, the bags can add up if you're taking a lot of very long trips. As a 2 to 4 day camper, I'm okay with that. Some people use regular trash bags with kitty litter; and, although that takes a bit more room, they say that is a lot less expensive. For long trips, I can slip a month of bags underneath the double bag that is unfolded and ready for use; so, it takes little to no extra space. The included gel in the bag decomposes (composts) and eliminates the potty smell, too. Regardless of whether you use a composting unit or a Luggable Loo, the waste ends up in the landfill to finish decomposing.
...To each their own, according to their needs and preferences.