So blessed we switched the autumn before lockdown. Internet has been reliable every since, except for the first couple of weeks - they did try to blame my router but they made up for that by lending us a standard router and then chasing BT when that didn't work either (it was actually the support that sold me - my test for prospective ISPs is to phone tech support at the weekend and I was surprised to get straight through to a tech with time to chat).
IDNet has been a significant step up from John Lewis in terms of reliability, which in turn was a giant step up from TalkTalk.
It is expensive and I would have liked more bandwidth for my money, but it's just been so important to have everything working reliably during lockdown. Well worth it.
Time With Provider: 22 Months
Package Name: A less than full speed FTTC package.