Under speakers Vibrapod or Gaïa

@geoffkait   My speakers have 'rubber bumpers' as stock footers for the rear side of the speakers and spikes upfront. The spikes are taller than the bumpers, for tilt and for clearance of the bottom ported transmission line. This is the stock setup.

What would you recommend? Thanks.

@audiosens Herbie's Footers are a reasonably priced solution should they be appropriate for your speakers. Star Sound Technologies is another option to consider. All the best with your decision.

@geoffkait    I'll check in when I'm ready to address speaker isolation.  Thank You! Your post was helpful.