When we remodeled our bathroom, we put in a new Kohler. It is a taller toilet than the standard contractor toilet they had in there. It's the right height so your knees are not in your chin. And it does not plug up. We got it at Lowes and it was around $225 or a tad more. Plus I never noticed until I was cleaning the bathroom the other day that although it is not a dual flush toilet, depending on whether it's #1 or #2, determines the water usage. Don't ask me how, as I don't have a clue. but there is only one flush handle.
Plus it's a powerful fast flush, and a silent fast water fill, so you don't hear the toilet running for a while to fill the tank back up. All I can say is that it is so nice not to have to grab a plunger every time you dropped a load.