Knowledgeable ADSL people. We're with Plusnet on a 40/10 line. I'm told we're not close to our exchange, but we get decent service. 36-38 Mbps according to Speed test.net, usually depending on time of day.
Upgrading to an 80/20 line is a pretty marginal cost. But I've been warned off in case the line from the exchange to our flat can't support the upgrade. The connection speed listed on our modem/router (sync speed?) is 39.95 Mbps. What's people's experience? If I pay a bit more, will I see double speed? Or will I just get the same for more money?
Plusnet's minimum guarantee is fair on our current service (and we've had to take advantage of it), but pretty low on the more expensive service.