First thing I did when we got our 1995 was pull the stock toilet, and install a Thetford cassette. I don't want to be looking for a dump station, or having to pull the trailer to a dump station (although, with 45 gallons, I could go two weeks without dumping, I think). In 6 years of using cassettes, I have not had a problem, nor wished I had a black tank to use.