Hi Steve,
Add PSB's Image B25 (or the slightly smaller B15) monitors to your audition list.
(more information)
They're similar to my Image surrounds. For a recent celebration, I wanted to bring in a pair of speakers to play a retirement dvd for a large room. At first I was going to bring in towers, then I had a eureka moment to bring in my PSB Images which I use as surrounds (they're bookshelf style speakers and can be used as mains). I'm happy to report that they performed admirably.