Being a certified tweekgeek, and definitely over the top I would recommend the power be your first focus. There are a number of things to consider, of course the power conditioner, but also dedicated line(s) for your system if possible, outlet quality, noise suppression on open outlets (Quiteline)to name a few.
I would look at racks and vibration after the power.
jd
I would look at racks and vibration after the power.
jd