Not much they can do to improve that, as they're relying on Openreach same as everybody else. But when you phone them up because your copper pair dies every tim

Not much they can do to improve that, as they're relying on Openreach same as everybody else. But when you phone them up because your copper pair dies every time it gets soggy and they say "Yeah, I can see it in the logs. That's a bit crap. Nothing I can do from this end but I'll get on to Openreach and email you in about ten minutes with an appointment" instead of "Ok, I'm going to talk you through rebooting your BT Hub", it leaves a positive impression. Oh, and on the subject of stability, they send me an SMS every time my line goes up/down. Even if it happens at 4AM. They don't have to, other ISPs hope you won't notice, it's just a nice feature.