Product review (5 stars): Life got better
What can I say?  They work!  Instead of having the sound of a helicopter landing and taking off every time we wash clothes on our second floor we now are blissfully unaware that the wash is ready to be transferred.  Putting these into place is challenging, but simply due to the layout of our narrow laundry room with the washer wedged between a sink and a dryer.  Even so, it took 15 minutes.