Last night I got the urge to throw on some
Floyd. Pulled out my MoFi
The Wall CD's and put the first one on. I just kept turning the volume up.
Let's just say I'm very happy with my decision to get the Super V's

I hate to think how loud I was playing - there was probaly some temporary hearing damage that occurred (at least I hope it was temporary). I freely admit that, when I am in the mood, the bass is very important to me. The kick drum and bass line from
Another Brick in the Wall (part I and II) were
so visceral.
Each speaker (LS-6, LS-9, and the Super V) is an incredible performance for the price value. Each one has it's strengths compared to the other (the LS-9 is a bigger speaker that gives you more performance than the LS-6 - a bit more extension in the bottom and a bit more volume which results in greater dynamics).
As sl_1800 posted (at least how I take it), The Serenity 7's are another step up. I think I'm beginning to understand, on a different level, why Danny chose to go in the direction he has. The Serenity 7's are trying to blend the advantages of each design philosophy and blend them in to one higher performance speaker. That results in a more expensive speaker, and that is a pretty big step (laws of diminishing returns - as you get near the top end in audio, even small improvements can cost a lot more money).
Soundofrockets -
I really would have liked to spend more time listening to your setup, as it was very impressive, but I had to get out to catch my flight.
All of my impressions are very highly room/equipment variable - that is, I have only been able to control the variables at my house. I believe that the room/speaker interaction is probably the biggest variable there is. At RMAF, they have to deal with a hotel room, but they get to make a bunch of equipment changes. At your place, some equipment got swapped, but I'm not familiar with your room....
....so the following opinions are based on my conclusions with my equipment in my room. With those caveats....
I think the Super V's produce far more depth to the soundstage than the LS-6's. I think the Bass slam is better with the Super V's. I think the speed of the Bass (down to the upper 20's) is quicker in the LS'6.
I'm having more trouble with the rest of it and am still playing around with setup. The P-driver has a different tone to them than the Peerless 6.5 and the Neo 8's. Not quite sure which I like better. I got very used to the sound of the LS-6, so right now the tone of the Super V's is different, and therefore "wrong"
But I find that that on most tracks, I am enjoying listening to the Super V's more.

(FWIW, YMMV, etc)
I will probably start taking measurements next week when I get more confident with the positioning of the speakers and where I put the room treatments. I also need to gain some confidence in the settings on the Servo amps - I think I can improve things a bit there. For example, I put Pete Belasco's
Deeper on, and the low note was not there. I know these speakers can reproduce it (with ease - I heard it at RMAF), but it wasn't there. Room node? Speaker positioning? Knob/switch on amp? - no clue at this point, but I will get it figured out.
