I have Boulder equiptment and I get pretty good results using Wilson Maxx2 loudspeakers. The Boulder amp seems to offer the power and control that helps get best from the Wilsons. I have also heard them do wonderful things with Avalon and Magico loudspeakers as well. I like the "velvet glove" aspect of the bigger Boulder stuff and it is unmatched when driving any loudspeaker that requires those qualities, as it offers them in spades. Your speaker choices are therfore pretty broad, but those are the best combinations I have yet heard with Boulder front end.
