I use it at work and it does the job well. I don't manage it and didn't install it, so can't comment on that side of things, but I'm really happy to be able to receive papers electronically than the old-fashioned fuzzy image way!
We use eFax for fax -> email and it's been great to be honest, we don't send a lot outgoing so pay the (overpriced) serviced office staff to send them for us.