On the Go Breast Pump

Ok my fellow pumpers! My insurance provided me with an amazing hospital grade pump when I was discharged. It's a Medela Symphony. I don't get to keep it forever (it's leased for free for as long as I need). Only problem is that it's very heavy and not practical for taking it places...so basically I either have to manual pump or make sure I'm home in time to pump! It's controlling my life!!!! I'm looking to purchase a smaller, rechargeable pump for when I'm out and about. I've only used Medela so I'm not sure what else is out there. I know everyone is different but I'm basically just looking for something lightweight and convenient! My babe will be in the NICU for atleast another month so pumping is my only option currently.

So far I've come across a Spectra which looks great and has good reviews.

Thanks so much in advance!