I heard the Sim I-5 driving ProAc Response 1.5 (MIT cables) and thought it was exceptionally good. Sim also likes Totem and Gershman, judging by their own demo's. I think Sim gear (which I own, too) is better with richer, warmer speakers that really benefit from the control of the high current amps and that can handle dynamics well. Vandersteen's might be a good fit. Sonus Faber Concertos are excellent, but I' never heard them with Sim electronics. I would also try any of the Aerial's that fit your budget.
