Small - but GOOD - active speakers for MC

I finally got an arrangement together that allows my to use my 2 channel rig as part of a MC setup for music and movies. I have Shahinian Diapasons, which are full range speakers. Ideally I would get a pair of Arcs or Slants for the rear, but things would work a lot better for me if I could find smaller active speakers for the rear. I was reading about the NHT M-00s, but wasn't sure how they'd stack up, or if there are any others in that approximate size and price range to consider.