I currently have a hospital grade pump from Nature's Bond which was covered by my insurance. I love how strong it is, but its also pretty loud.  I am going back to work next week and I am looking for a second pump that I can leave at my office - I'm interested in Lansinoh Signature Pro ELectric pump - it has good reviews and its very inexpensive.. Has anyone used this pump specifically and can tell me if its effective and quiet for the office? Thank u in advance!