I've used AAISP for my business for over ten years, starting with three ADSL lines bonded together back in 2012, to a dual-redundant fast fibre connection today.
We also using their mobile data offering for remote access to equipment on customer sites.
They are a world apart from other ISPs, with knowledgeable engineers who can actually resolve problems, instead of someone in a call centre just telling you to turn the router off and back on...
AAISP are really hot on security and privacy and their FireBrick products are the 'Swiss army knife' of office communications for any SME business.
I've since added an AAISP FTTP connection at home and the service is equally good on their residential offering.
They aren't the cheapest, but their offering is excellent value for money. In this case you really get what you pay for.
You won't find better - Highly recommended !
Time With Provider: 10 Years
Package Name: Soho::1