On FTTC, I would say the following:
There have been remarkably few unhappy BT Infinity customers on these boards since it was launched. I would have expected more tbh with 400,000+ customers but BT seem to be pulling out all the stops to ensure customers are happy.
I guess the fact that all the installs are done by an engineer helps a lot as it eliminates poor wiring which was the cause of a lot of low speeds with ADSL.
You mention customer service but I suspect that a bigger factor which prevents more people from upgrading is that they don't realise how conservative the FTTC checker is - if it says 40Mbps, you are very unlikely to get less, while with ADSL you could get a lot less when sold an upto 8/24Mbps product.
Its obviously your choice which ISP you want to go with - if you choose another ISP, don't forget you can usually 'schedule' downloads overnight with the right software, even if you are asleep..
If customer service is really important to you, you could also have a look at MHC's posts. I believe he has a 'BT Infinity for business' connection on a residential line which costs slightly more (£5/month?) but comes with support in the UK
I haven't been able to visualise your internal layout but one thing you want to consider (though you may decide this is too much trouble) is cancel the master socket move, book an FTTC install and see if the engineer will move the socket as part of the install when he is there. If not, you could always cancel the install and rebook the socket move. I believe (though do check) you can cancel an FTTC install right up to the point it is actually installed.. but as I say you might decide that this is too much trouble.
Edited by gt94sss2 (Sun 12-Feb-12 17:19:10)