Without a doubt, I highly recommend the Avent Isis iQ Duo double electric pump. I bought it back in November after 2 months of renting a Medela hospital grade pump. After TONS of research I finally decided on the Avent for a number of reasons, here are the biggest reasons:
1. Hospital grade motor, I found research stating that this was the only pump on the market with a pump as strong as the hospital grade.
2. Pumping style... with the rented pump, there was on/off and a dial that turned the pump from painful to toe curling!! With the Avent, you control the entire pumping rhythm. You begin by pumping manually at exactly the force and speed which is comfortable and most productive for you, after just a few manual pumps, you press a button and the electric pump takes over totally mimicing the rhythm you set. You can stop and reset a different rhythm at any time with the touch of a button.
3. OPTIONS!! This Avent pump can be used as a double electric, single electric or it even comes with equipment to turn it into a single manual pump to throw in your bag for quick trips. You could even use it as a double manual pump but you would have to still be hooked up to the motor.
4. Lastly, and probably most importantly for me, it is one of the very few personal pumps on the market with a CLOSED SYSTEM meaning there is no chance of milk backing up into the motor and contaminating fresh milk. This also means that it is safe to use second hand. Most pumps on the market including the Pump In Style do not have this feature and are not meant to be used by more than one user. This may or may not be a consideration for you but it was for me knowing I would probably be selling it or passing it on to a friend once I was done with it. All parts that come in contact with your skin or milk can be completely sanitized so, again, safe to share.
So even though it was pricey (nearly $400) I did the math and came to the conclusion that it was worth it and took the plunge. Once I started using it and got used to the new way it worked (well not new but different from the Medela I had been using) I was thrilled with my purchase and here are the reasons why:
1. All of the reasons listed above were true and worth the purchase.
2. I pumped twice as much milk in half the time as with the hospital double pump I was using. For various reasons nursing was difficult at times so I pumped a great deal to provide milk for my daughter when nursing wasn't possible, therefore this pump and I were close friends and it was good to me, not painful, quick and effective! BTW I have large breasts and nipples and never had a problem with the size of the cones.
3. We were using Avent bottles so I was able to pump right into the bottles we would then feed from without the need for adaptors, etc.
4. I also purchased a car adaptor and was able to pump when we had taken long car trips. We have a mini van with tinted windows in the back so I would hide out back there!
5. It comes in a great carrying case that is perfect for travel or even just moving it around in your house. Everything you need fits right inside.
Sorry to be so lengthy in my response but this really is a great pump and I feel it never gets the props it deserves because of the other more popular ones on the market. Although this is an extremely personal item and everyone may have different experiences with different pumps for a number of reasons, this is a great pump and I think you'd be pleased with it. The biggest downside for me is the price but it is worth it if you plan on using it for even 2-3 months (as opposed to say purchasing formula instead, not in place of EBF). If you are interested in a used one, I am willing to sell mine as I think we are done having children and I hate to see this perfectly GREAT pump go to waste! I'd would be asking $200 for it or your best, reasonable offer. Let me know if you are interested.
Good luck to you whatever you decide and blessings to you and your family on #2!!!