Bigjoe, you didn't mention a budget. I hate it when people say this or that is the absolute "BEST" of anything as subjective as that is. That said, I have tried enough isolation products and racks to make most people puke and FOR MY MONEY and tastes, (and based on my needs and preferences) NOTHING, and I mean NOTHING has held a candle to Silent Running Audio products. Don't let their deceptively simple yet elegant exterior fool you - there is a ton of scientific design and science behind them and the amount of labor that goes into them is staggering. Kevin does the resonance control for billion dollar nuclear submarines so he knows a thing or two about resonance control.
His Craz Racks can be made to order and will hold a small country (in weight). My rack, with NOTHING on it weighs in at almost 600 lbs. What I like most is that you do not have to pay a sonic price for the immense improvement in sound. There is no downside like there was with so many others I have tried.
If you want to know more about the Craz Rack and the science behind it, e-mail me off line or call Kevin at SRA - they don't come any nicer or more knowledgable.
A-Gon member Hooper is also an SRA proponent and may chime in here.
I hope this helps - good luck in your search.