I have the Thiel 3.6's. You're right. They are a bit tippy with the factory supplied spikes. Then I got the Sound Anchor stands. What a difference! The Thiel's definitely benefit from a solid foundation. The imaging is much tighter and cleaner. The bass is less boomy. I would highly recommend the Sound Anchors.
I toured the Thiel plant recently. Some of the people there also recommend using the Sound Anchors stands.
I toured the Thiel plant recently. Some of the people there also recommend using the Sound Anchors stands.