Love the Townshend Seismic Podiums. Replaced previously used spikes on my Spendor D9s and improved the sound in my system. Not inexpensive but to me they were worth the investment.
What your choice speakers with spikes or speakers with a vibration isolation device?
I am in the camp of vibration isolation. I think it makes sense that the less energy transfer into the floor goes into the air. I found these really cool magnetic isolation feet that I’ve never seen before. They are very affordable, the guys are from England. Here’s a link, The company is called solid air audio.https://solidairaudio.com