With the recent update to our exchange, and the option of LLU to Thus at another exchange for work, I wanted to know what the speed impact would be of switching a slow line to ADSL2+.
The sales guy I spoke to said he didn't think it would help much, and that the expected speed on our line would be a fraction of the current attained speed(?!), and was I interested in "less contention?" (Not really).
Freeola have a graph of unknown origin here:
Which says basically if your ADSL performance is lousy it'll still be lousy, which is what I expected the answer to be.