The Cadet 3 seems to be a very good price/performance ratio. The Champs ( notice they are up to "4" because the first three had assembly issues and reliability issues of the flusher mechanism) is in the same price range as Toto's and may not be a good choice.
I like American Standard, but it is hard to deny that they have had quality issues in recent years. I don't think the fact that American Standard plumbing was actually sold off by the Parent company last year, and is now owned by a leveraged buyout conglomerate who merged AS, Crane, and Eljer.
Bowl wash is an issue with the new "gulping" toilets,as I call them. And Toto seems to have the edge on that score.