I rarely write reviews for products. But this pump is SO GOOD! I was using the Momcozy M5 and this pump is pretty similar but so much better!! The heating feature is amazing! The silicone flange is soft but made so well! The customizable suction is absolutely wonderful!!The momcozy M5 would take about 45 minutes to an hour to completely empty me. These pumps take 25 minutes TOPS! Easy to clean, easy to use, 100% recommend reading all the instructions before using (it’s easy to get lost because it’s so customizable), pumping is so much easier to do now. I think the collection cups are a little smaller- but i am an over supplier and would have to empty them half way anyways! But they have a “pause” feature unlike the Willow360 where you don’t have to start you pump cycle all over again but just continue.OVERALL: out of all the pumps I’ve tried these are the most comfortable, easy to use, & efficient pumps! I will never use another pump again!