As far as sound goes, I measured it at an average of 55 decibels. It’s not as quiet as a pump like the Medela Sonata, but you definitely won’t struggle to talk over it. And unlike other pumps, such as the Freemie Liberty, you can stick the bottles, flanges, and membranes into the dishwasher for washing and sterilizing.
I did have a few quibbles with the pump. It is frustrating that you can’t control both vacuum strength and frequency. When you increase the vacuum strength, the frequency decreases correspondingly.
Also, I didn’t find the memory function useful, which might be more due to my circumstances and physiology. I find that my pumping routine and output can vary tremendously, depending on whether or not I’m stressed out, distracted, dehydrated, or hungry.
In the weeks that I used it, I pumped in several different states, on planes and while riding in the passenger seat of a car. Anyone who needs a pump this small is likely to be in a similar boat. (I haven’t pumped in a boat yet, but I’m not ruling out the possibility.)
As seems to be the case with many new companies, the breast shields are only available in three different sizes (21-, 24-, and 27-millimeters), which will limit the number of women who are able to use it. Replacement parts would also be an issue. Many women who pump do so several times a day. In between washing, packing, and traveling, there is a high likelihood that you will lose or break any number of these small plastic doohickeys.
As of this writing, I can only find replacement Motif pump parts from a few retailers, and none with free overnight shipping. The Motif is not compatible with my Medela bottles, or even the thread-changers that I use with my Spectra flanges.
And finally, as silly as it might seem to complain about "shrinking and pinking it" when it comes to something as overtly feminine as a breast pump, I have to say that I personally prefer more utilitarian-looking devices and accessories. Other moms that I met liked the included tote bag, but I didn't. Luckily, the pump is small enough to stick in a zip pouch in my backpack.
But for a portable, battery-charged pump, the Duo is amazingly affordable. The $159 price even covers the aforementioned tote.
If portability is your main concern—for example, if you travel frequently—the Freemie Liberty is still the quietest, smallest, and most discreet pump that I’ve tried so far. However, if you’re looking for a more affordable second pump to pack in a carry-on, or if you find the constant hand-washing and sterilizing for the Freemie cups to be more than you can handle at the end of the day, the Motif Duo is a very attractive option. Just don't get it confused with one of your kid's toys.