Best monitor to mate with a McIntosh MC252 amp?

I need some expertise and experience please! I have completed my Mcintosh system (MC252 amp, DVD851, and MHT100 for preamp and surround processor) and need a worthy bookshelf speaker (front ported or sealed) to maximize dimensionality (tough when they are on a bookshelf) and resolution. I am currently using some Proac Tablettes but they sound small and rolled off when compared to my reference 3A di capo's in my two channel room.

Any experience out there with synergistic matches from say Harbeth, ATC, Dynaudio, Joseph Audio, or B&W 705's??? Thanks!