Daisy seem to have a big hoover mopping up companies left right and centre, that spells one thing for me, Chaos
Therefore who owns my mail servers? who deals with my Customer service? which Network is my service running across? Can they move network IE BT/Ticali at a whim? I was with Vialtus at work and got dizzy with the amount of changes, in the end we didnt know who owned what so decided to get closer to the carriers and purchased a Virgin Media Leased line, took ages to install but its been reliable and quick, so no problems there.
My advice would be to work with ISP's that have a shorter supply chain, as it shortens the service and sales cycle.
Onwards and upwards