I might as well chime-in, although the Forte III is a mighty fine speaker (slightly smoother through the mid-range than the Cornwall III, IMHO) they require careful setup to get the passive radiator to work properly..... you CANNOT push them up against a wall. Additionally, they simply cannot compete with the Cornwall if you consider a "life-sized" rendering of instruments on the sound-stage important. They play "bigger", there's something about a 15" woofer that a 12" (even with passive radiator) just can't quite match.
As for the Chorus (either I or II's, I have owned both) despite their sensitivity, they are a far more difficult load to drive with tubes than the Cornwall. And of course with the same placement requirements as the Forte' (I, II, or III's).
That said, if the poster purchases either, he'll be grinning from ear to ear.