I would check out the Newform Research 645 (or 630, if you need a smaller model). They use ribbon midrange/tweeters and two 6.5" Scanspeak drivers for bass. I do not have a pair--yet. I read all of the reviews for some "vicarious pleasure" until I get my pair. One of the comments is the size of its soundstage. Check out the reviews at audioreview.com. You will see the company's web address in those posts. If you get a pair, let me know how you like them. I'm hoping to get some this summer!
Steve Vinson
Steve Vinson