I have been using the Medela Pump In Style Advanced for about 8 months, after going back to work when my baby was six weeks old. I use it at work, once or twice a day, and sometimes on the weekends. I've also flown cross-country with it several times as a carry-on. Occasionally someone official will ask me what it is or want to give it an extra screening, but other than that I've had no issues with taking it through security. Through all this, I have found it to be very solid and dependable, with no fuss or worries. It is lightweight although a little bulky, and simple to use. Once I developed...