I have worked with the Sonance line quite a bit and would reccomend the Cinema series if you are planning to use in-walls in a theatre environment. Enclosing the speaker in the wall, while requiring more planning, does give a significant improvement in the performance of any in-wall/in-ceiling speaker. Wiring with good cable is a must also but too much (i.e. a 20 foot run of 12awg speaker wire to a 5 1/4" running with 15 watts is not needed; size correctly.). The Silhouette series was designed to appeal more to cosmetics than to sound quality. The Cinema Two series are THX Ultra certified and will perform very well. All of the Cinema series have enclosures available. If you are going to go to ceiling for a mid-grade theatre application, the RS2 is the way to go. There are a lot of other brands out there, but the Sonance works well if you use it correctly.