Although there is nothing wrong with speeds or service, I did have a few problems when I was with BT, also had BT TV at the time, and missed out on a few recordings of the MotoGP, so having something to monitor the line should help.
That said, I too use Gig ports, especially on my NAS, and would not like to go back to 100Mbps, so mine will be going back too if its not Gig!