The subject says it all. I'm looking for advice from owners of the current Heritage line models. If need, I'm open to augmenting the bass with stereo subs. These would be paired with a McIntosh solid state preamp and amp. The only possible future change would be an MC275 - MKV or MKVI. I have a dedicated room that is 12x14. Because this is a dedicated room, I have the freedom the place the speakers anywhere. Also, this room has acoustic treatments all the way around, with the exception of the ceiling.