I wasn't happy with this pump at all. I can't understand all the positive reviews it has been getting. I opted to get a double pump with the idea in my head that if I pumped both breasts and one time, I would be able to fill up more bottles faster. I work ten to sixteen hour days some weeks so I like to be able to have as much milk pumped as I possibly can. I purchased this pump for what I thought was a great price. Playtex is usually a trusted brand and I have never had a complaint with one of their products until now. Sometimes while I was breast feeding on one side, I would just pump the other breast with this pump to make use of every precious minute I could use to pump. When I just pumped one breast I got a decent amount of suction and it wasn't uncomfortable at all. The issue I have with this is when I hook up both pumps and attempt to pump, the machine just doesn't put out. The motor sounds like it's going to explode and the pump cannot pull enough milk through strong enough to fill up my bottles. I end up wasting more energy and time using both sides. I can pump a decent amount at a decent rate with one side but using both is just a mess and very slow. I lose suction and I lose flow when I use both sides. I should have just spent a little more money on a better pump or gotten a single sided pump if this is going to be an issue. Comfort The suction is comfortable with one or both on. Ease of Cleaning It's easy to clean. Durability When I tried to use both sides of the pump, it sounded like it was going to explode. I didn't notice this when I just used one side though. Versatility You can only use one side of this at a time but I found it easy to use and cover myself while I pumped. I can even pump one breast while I feed off the other but it's just disappointing that I couldn't pump both breasts at once. Ease of Use The product is great and easy to use if you're just pumping one breast. The issue arises when you try to pump both breasts simultaneously.