I am a Sonos Community member just as you. The information below (although taken from Sonos marketing materials) is not an official Sonos piece. However, I did seek the consultation of Sonos Community Managers and other respected community members during the compilation of this information. Below is the final product. Enjoy!
These charts were developed to give you a snapshot feature/design comparison of Sonos speakers. They are separated into two groups...those generally associated with Music and those generally associated with Home Theater. However, depending upon the application all the speakers in the charts can be used cross-functionally.
The charts should not be used as the determining factor for your buying decision. They are merely an aide to be used as a starting point based upon your individual/personal need(s). Every situation (while on the surface may appear to be similar) has specifics that does not fit into a "one-size-fits-all" scenario. The Community is still here to offer counsel and suggestions to assist you in building your ultimate Sonos system.