I have used Isoacoustics footers on my speakers and components for over five years, and just two weeks ago I became an authorized dealer for them. The Gaia I will be fitting - no need to spend for the costlier Titan, though they may provide slightly better isolation control. While the Gaia I is rated to 220lbs, they show that performance starts to decline a little once you get past 85% or so of the rated weight.
The Townshend Podiums are an upgrade beyond the Isoacoustics and I just received a pair of those less than a week ago. That said, many people find them to be too high for their budget and too unsightly. if WAF is a factor, Isoacoustics is the more visually appealing solution and still works very well.