I purchased this all in one jobbie just before Xmas for use in my home office since my old fax machine was getting long in the tooth and was not overly reliable as either a fax or a copier. I have connected the printer via our router to our small home network. Set up was remarkably easy to do and the software that did this was very good in finding the printer on the network. A few small tweaks were needed to the firewall/Norton 360 but again all quite painless.
Its too early to say what running costs will be like, but the scanning and printing quality and speed are good, if a bit noisy. Fax also operates efficiently, and the software that controls things from your desktop is great, and transfer speeds to get things onto the computer from the scan function etc also excellent
Generally feel quite positive in terms of the overall package/experience, and the special cash back deal of £60 was a major influencer in the decision to purchase.