BT - Attracted by the Reward Card and TopCashBack incentives
For me the former was no problem, The latter was bad, I waited 3 months to be told I didn't qualify for both whilst all of my friends were getting their payouts from Quidco - my one and only time I have ever used TCB and never will again.
Just look at quidco as well, pays to shop around.
I'm currently dealing with BT over a evening slowdown. Makes me want to pull my teeth to be honest. BT should have an engineer arrangement button on the customer section. All the call centre does is "turn it off and on" "come off wireless" "send out an engineer"
I plan to move as soon as I can ( end of contract, price rise or bad speeds) You don't know an ISP's worth until the day comes you need them.
Stark contrast. BT £48,99
AAISP £45 - a million times better by all accounts.