Hello,
I experienced the same issue as you when I upgraded to FTTC, and since have switched back, (this was last year)
Was getting around 15Mbps to 18Mbps on ADSL2+ with 1.1Mb upload
and when I upgraded to FTTC the engineer even recommended switching back, as the FTTC synced between 10Mbps and 20Mbps download and the upload speed was 386Kbps, and it wouldn't budge, I have since found out that there is allot of aluminium line (source=engineer tracing fault) in the road coming to my area and that is most likely the cause, but none the less I am waiting for fttp to never arrive as if my line can get FTTC they will not install FTTP no matter what speed.
But had a bit of a giggle to myself when the area the FTTC is in had a planned power outage, and it was off from 8am till 6pm, overhead and underground wiring works, and people that where not in the affected area on FTTC the connection went down after a while, what a surprise, I was fine being served adsl2+ from the exchange and after the power came back on at the cabinet, peoples broadband started working again, FTTC has its benefits and drawbacks I suppose.
even if they do suffer from an extended power outage. unlike exchange served adsl2+
So if you do go back to adsl2+ be pleased because if there is a power outage in the area the broadband will still work unlike on fttc which will only last a few hours.
(providing your power isn't out or is backed up by UPS, Generator, batteries, etc...)
Edited by thomaswarne01 (Tue 08-Sep-15 18:36:26)