Try looking at the sealand traveler and traveler lite models. Thet are made of porcelin and cone in two heights - also two colors - white and bone.
Many of us have installed this little gem with great sucess and it seems to be durable and reliable. It comes with a cheesy plastic seat - but as it is a standard houshold size - replacement with the seat of your choice is simple. You view them online as well as the specs at PPL Motors