Loved mine. Got me through the first 18 hours, and then the boost button started to not work. Unfortunately both DH and I forgot, in the moment, that we'd been told to change the batteries if that happened. I ended up opting for an epidural because I really needed that boost button working to cope with the pain, and without it I was not coping at all. I wonder what the outcome would have been if we'd remembered to change the batteries...