I bought the Avent Isis Duo Breast Pump after my Ameda Purely Yours died. The motor had been getting a little suspect and one day it just stopped working. I also had the Isis Manual in the past, with pretty good results. So I got this one with hopes that it would increase my milk output considerably. I’m a working mom, so I need to have a good stock of milk available at all times for the sitter.

Overall, I’m extremely happy with the results so far. I’m getting 6-7 oz. every pumping session with the Avent Isis Pump now. I used to only get 3-4 with the Ameda. It also works significantly faster, and saves me time at work. Here are the pros and cons I’ve found in the short time I’ve owned it:

PROS:
-Adjusting the cycle and suction strength is great, and on this pump it’s very easy. The Duo lets me make the period really long and the rest period really short, or the other way around. I found that with the Ameda Purely Yours, you couldn’t adjust the two separately. If one increased, the other increased as well.
-The bags are really nice, and I usually use them to store milk in the fridge between pumpings. Very easy to seal to the pump and there’s never any leaking problems.
-Customer service is excellent. I called up when I had to replace the diaphragms, and I ended up talking to the woman for about 20 minutes. She really cared how I liked the pump and gave me helpful tips to make pumping easy.
-The cord is much less bulky than the on I had for the PY. It’s not the big box type, just a regular plug.

CONS:
-It’s very top heavy, and doesn’t stand by itself when it’s assembled. You have to hold things in place, which can be annoying with one hand.
-There are a lot of little parts and pieces to attach. Setting it up takes a little bit longer than it used to with the PY.
-It’s kind of loud. Not obnoxious, but it definitely lets you know that it’s working.
-It’s less comfortable than the PY, and I find myself sore afterwards most of the time.
-The spare diaphragms I bought were $15 each, expensive considering that they wore out pretty quickly.