sky use standard (the middle option), there is no super stable profile on FTTC.

But RobertoS has raised a very good question, as it would make sense for the DLM to be configured to not allow the stable profile to use a 3db snrm.

I couldn't be bothered searching to remind myself which system uses Standard, Stable and Super stable, and which uses Speed, Standard and Stable, but thanks . Now you say it I seem to recall OR is the latter, with BTW the former.

I think the answer to the question though will come out from stats turning up on the dslstats website. Possibly also on samknows, but we won't see many of those.