I have little experiences with them ... What do you guys use and why do you like it ... I’m thinking the Big issue is cleaning ...
Yes I am also interested in a porta potty.
I went downstairs and took some (simulated!!!) 'action shots' of mine. I think they all work pretty much the same.
Here's mine:
The blue concentrate makes them easier to live with...


A few pumps to get water in the bowl:

Pull handle to flush:

To empty it, there's a wire handle that unlocks the two halves:




Now it's just a matter of taking the 'jerry can' to a gas station washroom to dump it if there's no sani available. You don't need the special extra-flimsy toilet paper like you do with tanked systems, since it's going down a toilet anyway.
I'm building a pedestal for it to sit on because it's so low - we're both tall and that's a long way down !