I don't see what difference it makes which router I run.
Some are more suited to the DSLAM than others. That's why Sky supply ones they know work well with their service.
To me, it's odd that you sound like you know what you're doing, but you're unwilling to help yourself.
You have taken my reply concerning routers out of context - it
doesn't matter which router I had in respect that each one -
including those from Sky - suffered the same symptoms.
By using a different one each time (in the case of 3) I was able to rule out the router(s) as being at fault quite simply because the fault occurred across all brands.
As for being unwilling to help myself - unwiring extensions, purchasing alternative routers, disconnecting my home phone for 36 hours etc etc is quite an adequate response by the consumer. Not to mention countless hours on the phone to Sky.
I can't help feeling you are being deliberately obstructive with your comments. Whilst they may have some validity for those who wish to fully investigate connection issues, what I have done to prove the fault does not lie within my premises cannot be argued as unsatisfactory by any means.
As a consumer, you cannot
possibly argue that I have not done enough to prove the fault out, and yes, whilst I am technically brilliant (having an impressive IT career spanning 2 decades), when I pay an ISP to provide me with a service, I will only go so far to assist them with ensuring that they do, which in this case is a lot further than your average Joe Public.
This is most certainly not a case of not helping myself, this is a case of not being able to do anything further to assist the ISP in question.
Measuring line noise et al on the line is not something your average consumer ISP would ever ask you to do, and thus I haven't done it, moreso as I KNOW there is
nothing further within the premises that I could do to influence such. The problem is out there, on the line somewhere, not within my premises. It is up to Sky to measure the line, deal with any issues and resolve them.
Seeing no way in which I could possibly assist an ISP with less than impressive technical support as Sky by proving such information, the rest is quite simply their problem.
If they don't resolve it, then my next move is to either complain at the highest level, or move to a competent ISP such as AAISP who have the technical and commercial ability to resolve the matter.
My original (now elaborated) question of course still stands.
Are there any issues (perhaps a 'settling in' period in respect of line speed etc) that one could expect to experience when moving an ADSL service from LLU to an ISP such as AAISP who is not LLU?