Alternatives to Stillpoints

Final Daruma offered ball bearing type isolation before Symposium and Stillpoints if you can find them they are a better sounding alternative just my opinion on my own experience.
Herbies audio Labs are OK for the money but soften the sound to much if you use on all components.
If you would like to use the best isolation products on the planet then check out Townshend Audio.
Max Townshend has devoted over 40 years to research and development on illuminating harmful vibrations that can affect your systems performance. His first product was the Seismic Sink Platform. 
Start off with a pair of Seismic Podiums for your speakers then sit back and be amazed, after that you can use the Seismic Isolation Pods or Seismic Isolation Platforms to isolate individual components.
Or you can do the hole lot in one and sit your rack on top of a set of Seismic Corners S type or F type depending on what rack you have.
Ask GK why spring type isolation is best he has been selling them for years, you can add bearing type isolation as well but bearings alone will not completely isolate anything and your spending multi thousands of pounds attempting it.
The Townshend Audio Seismic Pod is 99 GBP each they will isolate your component from all the damaging effects of seismic vibrations.
My best advice is start with your speakers checkout Max Townshend youtube video on the damaging effects of spikes.
When your ready to experience Townshend Seismic Isolation go to ebay.co.uk and you will see discounted prices.

Hi thyname: According to the system picture you have posted you're using wooden shelves on your rack. Although they look really nice, wood is not the best material to use sonically. Keep the Stillpoints  Ultra SS footers you have for now and try upgrading one of your shelves first. There are many brands to choose from, although the better ones can be quite pricey.

I owned stillpoints with risers, an old version. I replaced them with Machina Dynamica Springs, which control vibrations in 3 dimensions and relatively speaking, cheap

Yes @yoby I do use wooden shelves and rack. But those are not your warehouse woods. My rack is made of 4” and 2” thick air dried solid maple wood from Mapleshade:

http://www.mapleshadestore.com/SAMSONv1racks.php

They are excellent. So may I suggest you take a look before you put them down?

I actually make a dual layer mass on spring iso stand, the Nirvana, Revelation Audio has one, it’s two stacked layers of heavy masses on springs. The trick is keeping the resonance frequency of each mass on spring layer far enough apart to avoid any untoward interaction. It’s how the big boys do it.