- once the half price period has finished pay a lot more per month than other providers.
Depends what you mean by "a lot".
I pay £45 per month for 300/50. Is that excessive?
On EE I could begin paying £35 for 500/75, but it quickly becomes £38, and a year later becomes £41, and then something unspecified at end of contract.
A better deal might be Sky 300/50 at £30. Prices do go up mid-contract, but their policy says that if they do, you have a 30 day window to leave penalty-free. There's a £5 setup fee, and it goes up to £43 out of contract, which is pretty much what I'm paying now.
Both EE and Sky have IPv6, but neither do static addresses, and I doubt their support matches up to Aquiss.
So honestly, I am happy to pay a relatively small premium for the level of service I get; but I totally understand it's not the provider for everyone.