An interesting looking box packed full of features, I found it easy to setup but it assumed ADSL is PPoE but my ADSL is PPoA which required the expert menu straight away so might be confusing for someone who is less knowledgeable. Overall configuration of ADSL and Wi-Fi is simple and straight forward, devices connect quickly to the wifi which is great, has guest access as well which is helpful if someone wants wifi internet access as you can keep them isolated from your computers.
One thing I was interested in was the normal phone features e.g. call blocking, etc but the analogue phone performance is awful, the filtering provided by the normal ADSL splitter is wrecked by their cable so an interesting part of the unit is useless because of it. The USB device access was another reason for buying as a printer or scanner can be networked which is great.
The one negative of the whole experience has been the condition of the unit when it arrived, the external packing was fine but internally the cardbox support was damaged resulting in cosmetic damage to the unit, Amazon have been very good and sent a replacement but unfortunately this was also damaged in exactly the same way but worse so a discount was agreed on the purchase price.
Overall an interesting unit packed with good features but also flawed by poor packaging and poor analogue telephone performance, would recommend to someone who is technically proficient rather than a non-techical person.
Update July 2013
A chap at work mentioned to be about improving network security and suggested I use a site call [...] and their shields up test to confirm if the router is stealthy on the web i.e. has no ports active, well unfortunately the fritzbox responds to ICMP ping requests and makes itself visible on the web.
If you are trying to be secure this is not good, looking at the settings in the fritzbox there is no way to stop it doing this unless you want to start putting custom software in the box which is not something I really wanted to do.
An alternative is to buy another ADSL modem router that doesn't respond to a port scan and double NAT the connection, this is quite simple with the fritzbox as it supports an ethernet WAN connection on the first LAN port.
Well I bought a cheap TP-link router for £15 on a whim to try and surprise, surprise the cheap router is nice and stealthy wheres the really expensive one isn't. AVM should stop introducing fancy features and sort out basic security in their routers, considering the price differential I am knocking off a star as this is a simple thing to sort out and is not documented anywhere.