I've had AAISP FTTC on two sites for 18 months now, and love everything about it. The lack of any fuss makes it well worth the extra money.
The service quality is amazing: if Openreach screw up, AAISP is always on your side and gets things sorted out fast.
In customer support you get to speak to knowledgable humans giving you solutions in minutes when you'd still be navigating the press-1-to-continue menu at other ISPs.
And the director's blog is well worth a read!
Time With Provider:
Package Name: