I replaced my pumpout with a Thetford cassette toilet around 3 years ago. After trouble with the electrics, the flush and the mechanism that operates the hatch through into the cassette, I finally threw it away and this time purchased a Dometic CTS4110, and it’s so much better. Sturdier, a better height, and although it has a china bowl, it costs less than £400, against Thetford’s equivalent toilet at £600. Don’t understand why Dometic is the lesser known brand as the product appears far superior. Only time will tell of course, but so far so good, and we all know how us boaters love our toilet talk!