I've been an AAISP customer for 10 years, starting with 512k ADSL, and now moved to Home::1 80/20 FTTC. During this, I've had bonded ADSL, different backhaul providers, house moves, and VoIP.

The key reason I've stuck with them (although they've never been the cheap option) is the high quality of customer service available via IRC and phone calls. There's nothing like speaking directly to someone who has no script to work from, and whose sole reason for talking to you is to get things sorted out ASAP.

There's a general attitude that, while I'm using consumer-grade backhaul, I should get the level of service other ISPs reserve for leased line customers. This is, in my opinion, the biggest reason to use AAISP and not a cheaper provider.