Product review (5 stars): Loving it one year later
I bought this unit 13 months ago, so I'd estimate it has been through 250 loads or so. So here's my take.
I live in the desert of central Arizona, which brings a few laundry challenges. First, it is very dusty here, so any outdoor chore is likely to get clothes (especially socks or pant legs) quite dirty. Second- it is hot!  115 degrees is a normal summer day. Which means I sweat a lot!  And since I'm very active (hiking, running, and mountain biking) those two things combine, and my washer is asked to handle some stinky, sweat soaked and dust covered clothing. (Imagine my clothes after a two hour mountain bike ride featuring a wipeout or two.  Filthy and bloody).
Two other issues make laundry a challenge here- our water is EXTREMELY hard, and I have a septic tank that I'd rather not dump suds and chemicals into if I can avoid it.
The WashIt has performed flawlessly. I use no detergent whatsoever, nor fabric softener. The only time I use bleach is for badly stained whites, and then only 1/4 cup. My hot water tap behind the washer has been turned off for a year now.
I have a high end LG front loader, and the cycle I choose is Speed Wash with cold water. This takes only 25 minutes. But since the rinse water passes through the WashIt, and there's no detergent to rinse away, I actually get two wash cycles in that time.
The laundry comes out perfectly clean, with no chemical odors or perfumes, which I love. Colors stay bright, and items like towels are noticeably fluffier and more absorbent (I'm assuming this is because the fibers are not coated with unrinsed detergent residue).
As an added bonus, having the clothes truly clean (as opposed to coated with detergent) means they dry much faster, saving energy even in the dryer.
I was an early adopter, so I paid $400 for mine. It is absolutely worth that price. At today's lower price, it's a steal! If mine were stolen today, honestly, I'd order another for overnight delivery so I didn't have to do laundry the old fashioned way.
If you're on the fence, go ahead and order this. You will not regret it.