The Idaho Jones Twain breast pump is a great portable breast pump with a lot of features.
It has dual motors, meaning that each side has it's own motor can be turned on and the suction adjusted separately.
It also has features like a child lock (in case you have a toddler who likes to push buttons, the ability to mute the buttons, and the option to set an alarm for your next pumping session.
It also has silicone breast shields and the ability to single pump or double pump! You can check it out at the link below.