I love Andrews & Arnold... I've been a customer for over a decade now, with the past couple of years being on FTTP. I love the fact that you get to talk to real people that truly understand technology (and often the engineers themselves) rather than a contact centre. Nothing is too much trouble, and when things don't work as expected they fix it quickly, often when it's not their fault (e.g. with openreach issues). The control pages let you see what's happening and give you amazing control over your connection, and the ability to configure pretty much anything on the router or use a different device is very useful. The only downside is that they are not cheap, you can get a lot faster and unlimited connections for a lot less, but for me it's fast enough and the quota is more than enough, so it's worth the extra for the unparalleled service they provide.