Sound Anchors for B&W Silver Signatures 805's

I keep reading where Sound Anchor stands are being used for the B&W Silver Signatures and its descendants, the Signature 805's and the Nautilus 805's.

Are they that much better than the Welsh Slate stands provided with the Silver Sigs that it justifies the change?

Krell man,
I really don't mean to hijack your thread but I just looked at your system and would love to hear your comments on your Herron preamp. I've had one very briefly and think it's still burning in, just looking for comments/advice from longer-term owners. Feel free to email me if you don't want to further clutter up your thread.
Many thanks,