I exclusively pump, so I use this pump a lot. I was loaned the Calypso model by the hospital which was great but decided the buy one for myself. The Alyssa model is great and the power pumping helped increase my milk supply. I had a problem with the charging connection but Ardo quickly replied to my email and sent me a brand new pump the next day free of charge. I would definitely recommend this pump and the customer service is second to none.