Well, he's just left, and I am very pleased.
He brought a Silver STB with him, and was very helpful and chatty.
The only downside is, this box makes a bit more noise than my old one. I won't be changing it because it a Silver one,and he said that it is brand new, whereas the Pace ones are usually reconditioned, so the noise fro this one must be how it's made, and not just that it's dying on me. But it's going to take a bit of getting used to.