How to pick a pump

My insurance company covers the cost of a breast pump. Or I can pay the difference for an upgraded beast pump as well. They gave me a list of free breast pumps and the upgraded ones. I have NO IDEA how to choose one. I know warranties are important but what makes a pump good?

Do you suggest a double

pump? I am a working full time mom so it will get a lot of use when I’m away. I’m so lost when it comes to this subject.

Any suggestions, tips, opinions will help!