Quite the opposite experience with BT over here. Having used numerous Wholesale ISP providers I found going back to BT a revelation. Not only is my connection faster(I'm only .84km from exchange), i find less throttling at peak times and no where near as many service outages. I've always had unlimited services so Gb Caps dont apply to me.
Whats even better, is that BT are currently the only supplier to offer FTTC in my area so now i get speeds(and have done sicne first having it) of 35Mbps Download and over 10Mbps upload. It truly is a stunning broadband!!! Price is slightly higher than other ISP's but i'll pay that to keep a fast, solid, constant connection.
Whats even better, is as I was one of the first to take up FTTC I was selected to take part in testing a new Games console. It was a cloud based console with little or no lag on the connection. No expensive hardware needed, just a small box and a controller(much like the size of Original Xbox size so it needed some work) but I got paid £150 for testing this over the period of 3 weeks. So my new FTTC braodband was actually cheaper than the 'normal ADSL' from BT. WIN WIN for me!!!!