I'm new to this form and hope you can help. We are looking to replace our toilet with a low flush one, due to our being on a well system. I have looked into the dual flush Caroma toilets from Australia and I am quite impressed. They have a 4" trap versus the nomal 21/2" one. I can get one here in Northern Ont. for $450. Does anyone have any experience with this type of toilet or any other brands of low flush toilets. Your help is appreciated.