The reason I asked about your system was to see if a new rack was the right choice for an upgrade. For example, if you really needed a new pre amp, it would be foolish to put the money somewhere else. Assuming your system is in good order, you really need to look at your components themselves. The type of components, and how well they are made will dictate how bad you need a new rack. Sources with moving parts like TT's and CD players and components that use tubes, tend to benefit the most from a good rack. Also, some components are designed in such a way that they are less prone to vibration. A good example would be my Wadia 861. It sounds the same no matter what you put it on. My Rotel 1072, on the other hand, improved when put on a good rack. Even more so with cones.
All things considered, the best overall approach may be to go with a good quality, but not ultra expensive rack, and then treat each component individually with things like cones and tube dampeners. If you have a TT, you may want to consider a nice base for it. Doing it that way is the best value because it lets you put the money where you need it most.
I buy these types of products from The Cable Company. You pick whatever you want and they send it out to you to try in your system first so you don't waste your money.
