Product review (4 stars): Pretty Good, Especially for the Price
We bought the Wonderwash because we live in an NYC apartment with an expensive laundry room and we just had a baby who makes lots of dirty clothes. We've only used it a few times so far, and it seems to work pretty well. I used it while 9 months pregnant and within a week of giving birth and didn't find it too straining, although it definitely helps to have it on the counter instead of in the bathtub or on the floor to keep from straining your back too much. There are a few cons or areas for improvement that I've noticed, though.

-It would help to have some sort of markings on the inside of the machine to show the lines for a quarter, half, full load, etc., because that affects how much water you use (water fill lines would also be helpful). I know that is kind of a silly thing to say, since you'd assume I can eyeball whether the thing is 3/4 full or not, but I would love to know if my eyeballing is close to what the manufacturers are thinking, especially if that's going to effect how clean my clothes get. I don't weigh my laundry every time I do it, so they could give a little more assistance here.
-I wish the frame were a little sturdier. It really feels like I'm pushing it pretty hard when I'm spinning a full load for two minutes, because the legs are kind of shaky. I haven't heard of anybody saying it just broke or something, but I think they could stand to add some metal to the frame or something. That would add what, like $2 to manufacturing costs? I don't know. But I would pay for it.
-I wish there were a more efficient method for rinsing. It takes a while for water to drain out the bottom (when I rinse, I just tip it over afterward to get most of the water out), and I usually have to do it a couple of times to get all the suds out. Not the worst thing in the world, but I wish it were quicker/more effective.

Overall, though, it's so easy to use, saves us lots of money, and works pretty well. I'm planning to use it for cloth diapers once the baby is out of his tiny newborn disposables, so that will DEFINITELY impact my review. If I forget to come back for an update, just remind me, because I was desperate to find suggestions about whether this machine would work with cloth diapers & I only found one or two mentions of it online, so I'd like to help anyone else with the same question.

**EDIT FOR CLOTH DIAPER INFO**
We've been using this for about 6 weeks now with our baby and our cloth diapers and so far, it's fantastic. No issues with odor, build up, or staining. Same complaints still apply, but it's already more than paid for itself in money saved buying disposable dipes or doing laundry in our building's machines ($1.50/load). A few tips, though:
-We've only ever used Charlie's Soap, which is low-suds detergent and studies have shown it to leave little to no residue
-We keep our routine flexible based on the particular load we have in, generally meaning we leave room to add more rinses and sometimes mix it up with really hot rinses vs. cold rinses (not always the same thing)
-We use BumGenius Freetimes, which have suedecloth and microfiber, and they get really clean. I can imagine natural fibers would only be easier to get clean.
-Since it takes so many cycles, we often just flip the machine over to drain it instead of using the drain spout. It saves a lot of time.

Our routine is this (approximately):
-Warm rinse full of water for 60 rotations
-Super hot wash with .5 Tbsp Charlie's Soap and whatever amount of water is recommended for load size
-Same thing
-3 rinses (one cold & full, two hot with the amount of water used to wash the dipes; the order changes)
-Extra rinses as needed for non-soapy or clear water