I LOVE mine! I had the manual, which was great and allowed me to have spare parts. I use my swing daily and I have never had an issue. You can adjust the pumping power before & after let down. All the medela accessories work with it too. I haven't noticed my batteries being an issue and I've had mine in for a little less than 2 months now. You can also program to your pumping style (length until let down etc). I personally haven't done it, but I haven't tried either.
Hali: SAHM, 4 boys. :cloth: Babywearing.