[Kidkraz]

I never used the original flush toilet when I got my TM. Not all state camp grounds have dump stations and I was used to a small cassette toilet from my popup days. So I was good with moving to a larger cassette. Thetfords 92853 Porta Potti 550P model. I used that for several years, but moved up to the version of cassette the factory was offering. That worked great until a fresh water line split and the OEM told me that I would need to replace the toilet. So I now have the newer version of cassette, C223-CS Cassette Toilet.
The hardest part was cutting a hole into the side of the camper. That is not for the faint of heart. I was really worried about leakage, but than realized with the shells closed I didn't need to worry about that.
I like my setup, if works for me, it may not for others, and that's ok. I would agree with Bill and Larry, give yours a try before spending money.