Summary:
I'm using the TDM23C center speaker together with my existing speakers (planning to upgrade gradually to the whole set). The center is really great, for movies as well as music. Dialogue is crisp and clear with enough bass (when used in 'Small' mode). The punch is the best I've heard so far.

I'm using it together with the Sony DVPS725 DVD player connected with the Yamaha DSP-E492 powered by 5 Marantz MA-500 THX mono amps. Although the TDM series are very expensive over here in the Netherlands, in the home country (UK) you can buy them for competitive prices.

Summary:
I have to say this is one of the best surround systems available today. It certainly has one of the best if not the best center channel speakers on the market. The build quality and looks are definitely spouse friendly. The dialogue is crisp and clean and the foley effects are among the best I've ever heard. I have them set up with the Sunfire Mk2 True Subwoofer for an absolutely knock your socks off system. Great for movies, very good for music.