I used the London 10 Room Treatment kit along with the Cumulus Ceiling Corner Traps in my listening room with excellent results. You will have to order the corner traps separately as they are not part of the kit (and I highly recommend them). Installation was a breeze, however, I chose to use the heavy duty Command Strips with the supplied brackets instead of the supplied inserts and screws. The panels and the corner traps literally transformed the sound of my room, the bass was tighter and more defined, midrange was spot on, and the highs were very detailed with out being etched. Imaging was excellent. Overall a big improvement at a modest cost compared to other audiophile brands.