It took me a few years, but I finally got a pair of Gradient Revolutions. I love them. As far as I can tell they have no significant failings and most importantly they work in my overly squarish room. The bass definition and tonality is the best I've ever heard in any system I've ever had in any room. The coaxial midrange/tweeter design interacts minimally with the room and provides excellent imaging and soundstaging. The only downside is their low sensitivity. I'm using a Rowland 112 which is rated at 275 watts into the speaker's 4 ohm load and that's more than enough for the typical listening levels I enjoy (80db to low 90db). What's missing is a sense of near unlimited dynamic range higher sensitivity designs can provide.
The Revolution is a really good sounding speaker designed to sound really good in real world rooms.
The Revolution is a really good sounding speaker designed to sound really good in real world rooms.