Best Isolation Device for Speakers?

Has anyone had a chance to directly compare different speaker isolation tweaks? I am wondering because of the recent thread on the Sistrum stand. I know that many of these things have been discussed in other posts, but there is not alot of direct comparison among them. I suspect that most of these are excellent, so if anyone has some information on their specific sonic impact, that would be helpful. I have a pair of Thiel 7.2s. Some of the ones I am considering:

Aurios Pro
Sistrum Speaker Stand
Mana Speaker Stand
Stillpoints
Audiopoints

Thanks,
Rob