I have the Champion 4 and its the best toilet I've ever had. I bought our first one when the kids were young and I was sick of them plugging it with excess toilet paper and whatever else a toddler drops in there. Never had to pull it once to retrieve a hot wheels. lol
I bought another last year and swear by the model.
https://www.youtube.com/watch?v=UD0x34e-V9U