Component racks

11flat6,
I can only compare the Adona rack I own to the other rack that I used for many years which was a 4 shelf welded square tubular rack by Target with MDF shelves. That was a sonic improvement over my makeshift former rack, and the Adona is much better than the Target. Better meaning more stable imaging, quieter background, music seemingly more detached from the speakers. And I enjoy the much greater room for easy access, and the good looks and adjustability of the shelves.
I would also like to respectfully disagree with Notec concerning the importance of a good rack. Chosse one and drop the bucks. You won't regret it.

I picked up a 3 wide 10 shelf audioav zirconia system here on AudiogoN. Now I need to deal with mounting my 52" Bravia on a stand of soe kind. The rack will run diag., so I am thinking the Sony must be on an av dual post stand or some thing. I son't know abount mounting a 100 lb + flatscreen on a swing arm. Thoughts on that?

I'd buy whatever looks good to your eye and matches your listening room. Make sure its solid and can support the weight of the gear you want to use. A rack should not have any effect on the sonic performance of your audio system whatsoever. If you have vibration issues, you either have a poorly assembled rack or gear.

I have an enclosed cabinet with mdf shelves. All gear is on Herbies Tenderfeet or Vibrapods. The back lower panel was removed to improve air flow. Would a high end rack really improve the sound over this setup ?

Blueskiespbd, I believe that most people in our hobby would disagree with captainoblivious, racks do make a difference. Enclosed cabinets can increase standing waves depending on the location and hardwood sounds better than mdf. Check out the thread Vibration theory: Isolate or Drain.