Just purchased the m6. I have the m9 and I love it but it does leak on me quite a lot. I love how I can control it on my phone though and I would loveeeee to purchase the new air 1 ultra slim breast pump but it is sooo expensive for me. As for the m6, I already love it! I’m not even done pumping my first session with it and I can already notice an amazing output. It seems super easy to put the milk out and to clean! Only downside is side is not having it app controllable.