Good question.
I did agree to renew with BT and they messed something up (forgot to post the router), then their customer services were somewhat rubbish.
I was told by the complaint handler that I'd been lied to by previous people I'd spoken to. I thought this sounded a bit harsh but she repeated it over and over. I was glad to get rid of her, it was passed on to someone else.
It was pot luck when I called whether I spoke to someone who knew what they were talking about, or just seemed to make stuff up, or refused to help me ("I'll email the complaint handler to ask them to call you" - they never did).
The actual FTTC service has been good, and I'd renew with BT if they offered me FTTC renewal at a reasonable price, but they won't.
So going over to full fibre, and with the poor recent customer service, I am looking around for a new provider.
But if the conclusion is that they're all as bad as each other, I wouldn't rule out just staying with BT.
Edit: Forgot to say that renewing with BT was somewhat painful as they kept waffling about EE. I wasn't interested in EE, but couldn't work out whether BT and EE are effectively exactly the same thing for broadband, and/or whether I'd be told in a year that I have to move to EE, involving another change of router etc. It was a bit of a mess really IMHO.
Edited by zebsyzebs (Sat 06-Jan-24 23:37:18)