Count me as another Northstar owner who is happy to have a cassette toilet. The cassette toilet is built in and looks and feels just like any other toilet. It flushes really well with virtually no water. As others have mentioned it is easy to empty and can be emptied in an outhouse, flush toilet or at a dump station.
In my opinion Northstar makes pretty decent campers with good designs and quality construction. On a scale of 0 to 10, I would give most builders a score of about 3 or 4. Northstar gets an 8 for quality.