Even though the 7es3 is less expensive than the 30.1 to my ears the 7es3 sounds better. More bass, and bigger image. The 30.1 are great speakers but sound much smaller the the 7es3. I went to my local dealer to listen to the 30.1 but ended up with 7es3. My listening room is 19'x13', and needed a larger speaker.
FYI, my room is even larger. I had both speakers here at the same time and much preferred the 30.1s.... but all of our ears are different!