Yeah @tweak1, I have three sets of MD Springs: two sets of the smaller, one set of the big ones. I got them for use where I don’t have room for the taller Townshend Audio Seismic Pods, which I have been using for a couple of years now: under two turntables, phono and line stages, power amp, and loudspeakers (if anyone has a set of the discontinued Model AA, I want ’em). I was touting the Pods for quite awhile here on Audiogon (do a search through older threads if you want), but most were secure in the "knowledge" that their BDR or DH Cones were the only way to go, so I gave up.
Both are good, the Townshend more sophisticated (and expensive). Plus, the Pods provide leveling, great for turntables and digital players. I bought my MD’s from Geoff Kait when he was listing them here on Audiogon, the Pods from John @ Townshend Audio (though I bought all mine when he was selling on ebay as Select-HiFi). John is related to Max Townshend, as is a real swell fella to deal with.