The fixed IPv4 was a key matter when I signed up. Particularly that they offered /29s, though that is less important now that SNI is almost universally supported and due to physical line issues over the last year or few (and wanting >17Mbps upstream) I've moved most of the public bits I hosted (literally) in-house to external locations.
The question of IPv6 and fixed IPv4 is fun to raise when sales robots talk about matching other ISP's offerings. The irritating one is when they say "I'm sure we can..." and persist when I say "I know for a fact your consumer product range does not offer that".
(And it's always entertaining to ask the folk trying to sell BT/Talktalk/Sky/Virgin broadband deals on the street about IPv6 for the utterly blank looks that you get).