Yes, that thread is indeed epic. It seems pretty clear that they knew something was wrong their end and just did their best to skirt around the issue, hoping I would go away. Well, I did, eventually - and they lost a customer out of it as well.
As for you switching, I have only good things to say (so far, touch WOOD) about PlusNet, so would recommend them. Saying that, Sky is meant to be pretty good too - and if you are sticking with them it may be an idea since you could get it cheaper.
But yes, Sky is expensive. Myself and Emma have considered getting rid of it several times. Thing is, there is still a lot of stuff we use it for:
Game of Thrones
Fear the Walking Dead
Agents of Shield
All the kids stuff
Anyway, I just hope you do not have to go through all the shit I did with them. I would not wish that on anyone.