I am a huge Polk fan. I have bought nothing but Polk speakers since I first hear them. Everytime I compare them to other speakers, I always find the Polk's to sound better.

So I would recommend the Polk S10's and use a fosi audio BT20A to power them. These looked just like what I was looking for in the first place. They were small had the same drivers 4" woofer and dome tweeter that the Micca's had.

The S10's are marketed as surround speakers and in that role I think they would sound great.