I have heard both. It depends on what you are listening for. The vr-33 and vr-35 require about 10" from the back wall. Both are stunning in sound. What I can appreciate is that the vr series use the best components available. Including the crossovers. I have a dedicated listening room designed for music reproduction. My main rig utilizes solution amps and a United Audio reel to reel as a primary source. The speakers sell in excess of ^$100,000. My second system...and the one I continuously end up listening to the most...is my vr-35 system. I did extensive listening and found the vr 33 just sound better than the pioneers. As a matter of fact, the sound of the vr-33 is closer to the S-1EX as far a dynamics, imaging, and the all critical midrange, where voices live. The VR-35's exceed it. The Pioneer TAD reference one loudspeaker is of course fairly untouchable. The quest involves listening. Each of us listens differently....that is why there are a plethora of loudspeakers. If I had a choice.....and i can make make any choice i want. If you are looking at the $6500.00 S-3EX's.....go for the VR-35's. You will be brought to your knees. Another loudspeaker that has the same effect is the Gemme Audio Tanto Carbon. Just a wonderful loudspeaker and soul inspiring. Loudspeakers should move your emotions. I can honestly attest to the fact that the VRs and the Gemme Audio's reach this level.