Product review (5 stars): Amazing!
Yep, these things really are amazing. We bought a new set of Speed Queen front loaders and these beasts (I mean that in the nicest way possible) were shaking our upstairs like crazy. The lamp on my dresser, located 50' away from the washer, would jiggle like crazy. We really like the washer and dryer, but if we couldn't come up with a solution, they would have had to go. So we bought a set of these things and PROBLEM SOLVED! I could not believe how well these things absorb all of the energy that was being transferred to our floor. These feet cut out about 90 percent of the noise and movement coming from our upstairs laundry room, which was totally worth the price.  Cheaper versions might work, but I'm not going to take the risk.