Having been with some OK and not-so-OK ISPs over the years, often choosing based on cost above all factors and having a less than acceptable experience I settled upon Unchained as the 'best reviewed' provider on ISPReview.

I've been connected for around two weeks but so far I feel I have made a correct decision.
Prompt, common-sense answers to my presales questions, a smooth (and speedy) install process and an absolutely rock-solid line delivering better performance than when I was on gigabit down with BT Retail.

If you're the sort of person that just wants to get a "wifi box" in the post and plug it in this might not be the provider for you.

If you're the sort of person that's comfortable configuring your PPPoE credentials and know your way around your router's config pages (a router being an optional extra!) then you will likely be served well by Unchained. It's pure, unadulterated internet access that absolutely delivers even during 'peak times'.

Static v4 and v6 addresses come as standard, and the cost isn't all that much more than the more mainstream providers. A small price to pay to not deal with scripted call centres.

I've often considered going down the AAISP route, with them often being considered the 'gold standard' for nerdy folk but the tight limits always put me off.
I expect Unchained will give them a run for their money.