Epos monitors will get you the great midrange you want for a fraction of the price of the Harbeths. I believe the new line of Epic standmounters are well reviewed. You can check them out here: Epos Epic
I think they would make a good match to those two lil amps. Sam Tellig tried them with the Brio here (toward the end of the review): Epos Review
I think they would make a good match to those two lil amps. Sam Tellig tried them with the Brio here (toward the end of the review): Epos Review