Help needed regarding purchase of Amp Stands.

I have had great success with Sound Anchors amp stands on my VTL tube monoblocks, as well as a Levinson 333 solid state stereo amp.
The improvement in sonics was nothing short of astonishing with the tube amps. I just received the stands about a month ago and I am still amazed -- greater clarity overall; smoother highs, tighter stronger bass. I can't say enough about the improvements.
When I had the Levinson, there was a substantial improvement in those areas as well, not as dramatic as the tube amps, but still significant. I felt that I would not want to listen to my system with the Levinson without the Sound Anchors stand after hearing it with the stand.
Bob, the Sound Anchors owner, is a true audiophile and manufactures a high quality product. They are not cheap, but the investment is well worth it.

Consider the Machina Dynamica Promethean springs and get your own wood sandwiches locally. Very reasonable cost and extremely effective. Moreso than many other exotic ($$$) approaches that I've tried. Currently I am using this set up under my CD player and power conditioner

The Grand Prix Monaco stands noticeably improved my Lamms' sonics, and are purty to boot.

I've been experimenting with amp isolation for quite a while. I don't know that there is any one answer that fits all needs, although I hear the Grand Prix is the best out there, pricey though.

When listening to various isolation components I first listen for any dampening effect. No one can tell you how much or little dampening you may want, experimentation is necessary. Your choice will also be largely dictated by whether your floor is suspended or on a slab. If it is suspended I would first find a way to mass load the floor where amps will be located, I use massive slabs of concrete (fireplace threshold). I've also heard that jack stands supporting the floor directly underneath stands works well. Equipment racks that are spiked directly into a suspended floor are compromised greatly.

I have been using Finite Elemente Pagode Master Reference amp stands with excellent results.

Those, with GPA, SRA and Critical Mass are the top tier in amp stands.