Cassette Toilet vs Conventional RV Toilet

I have had a black tank in TT #1, then a porta potty in #2, then a black tank in #3. A cassette is much like a porta potty. I wish I had the porta potty again, or a cassette. But I camp alone. A family would fill a cassette too fast, I think, to make it practical. I could go a week or more with the porta. And no need to hunt up a dump station or wait in line. Easy to empty in the toilet once I returned home, too.