Product review (5 stars): Check your clothes as you go.
All I can add to the other reviews is that I like being able to check my clothes, individually, before they're done. Our laundry room is pretty nice, but, like most, it doesn't have great lighting. Today I noticed a spot on my jeans and stopped, treated it again with Spray and Wash and some Borax, and got it almost completely out. Others have said their clothes are getting progressively cleaner, so I'll see.
I also got the Ninja Soft spinner, and they work well together.  You see the water coming out of your clothes as they spin dry, so you know how much soap is still in them, and if the water is clean yet or not.  And it gets them almost dry.
But you can see how much dirt you're getting out with the WW, by looking at the water, too.
I use Tide, and have found I need about half as much soap, or less, than they suggest.  And enough water to cover the clothes seems to work best.
I put a dot of bright nail polish on the top of the drain pipe.  I'd get distracted and start putting in rinse water while it was still attached, since its white like the bathtub. That worked for me.
It was great to read in the laundry room, (except that my glasses fogged up) or make new friends, but when I got too interested in that, I wound up with one very short tee shirt. I think I like this better. My jeans look brighter than when I bought them.
Personally, I think this little machine is beautifully engineered. Its light weight because its just plastic, but its also easy to pick up with one hand. I keep it in the bathtub and move it out when I shower.
I also got a very comfortable quart-sized sturdy plastic water pitcher at Target.  It was somewhat expensive,  but the soft handle and gauge you can read from above made it worth the extra cost for me. The last thing I wanted was a heavy glass one.
I like this machine. It does what it was made to do.