I have used the Medela. Currently using the medela symphony from insurance. Also have the baby Buddha and like it as the pump motor has a wearable version that will connect to the same pump rather than needing two different systems.
I got the momcozy M5 which is the hands free one as I just wanted to pump to build a freezer stash, not to build supply. Worked great for 6 months and then barely worked for me anymore. Had other friends with similar issues with mom Cozy but I've heard Medela ones are really good so I'd go with that brand if I have to buy a pump again another time!.
Momcozy handsfee is super! I’m very positive about it. It has lots of battery, easy to clean, no pain and I get a good portion of milk. Just use it for 3 weeks as a first time mom. I don’t have experience of the Medela, but probably also a good choice. With the momcozy you also have different pieces for the right size of your nipple. Good luck with making a decision
I have both and love both! I'd say medela freestyle empties me better and has less parts to wash. My momcozy m9 hands free is great during the day when I want to get on with bits. It also lets me control each pump individually while the medela doesn't, more parts to wash though
I love the Medela freestyle