I purchase the double calypso breastpump after borrowing one from my hospital. Having suffered a case of mastitis early on and having a lazy latcher, exclusively breastpumping was the only way to ensure my baby was getting my milk. We have successfully made 3 1/2 months and plan to continue until 6 months old. Purchasing the double pump makes perfect sense. It cuts your expressing time by half. The machine is quiet and simple to use making it easy per session. Whilst I haven't purchased it, I would recommend purchasing the hand pump adapter as you never know when your pump may let you down. I'm towards the end of my expressing journey but would purchase one in the future. I have on a daily basis used the pump whilst out on the road and purchased an invertor for the car to save on batteries. With a heavy pumping schedule the pump is great to take out and about. I purchased my pump direct and the customer service was excellent. I also purchased the storage bags which are great and easy to use with the tie wraps. I also purchased the travel bag with ice blocks and extra bottles which help. My only niggle would be that I would like to see a pumping bra in amongst the accessories collection to assist with hands free but it's not a huge problem as you can buy many unbranded ones online. They do assist greatly with suction of the funnels. I found it useful to change the size of the breast funnels and they are easy and simple to take apart to clean and fit in my Tommee Tippee steriliser. An all round great product that I can't live without.