Always had good support this last 5 years. Here is current example:-
Rec'd e-letter that soon local exchange (023-8089) to be Zen'd, as on Zen Lite don't expect either problems or amazing improvement, your BT landline will be off for about 15 minutes. Dreaded day passed, no drama.
Wife & I have separate standalone towers on XP using Netgear 834 router. After about a week getting on web became sluggish, lots of "not found" reports on trying to send out e-mails. Router normally left on 24/7 but tried switching off, pausing, reactivating, maybe this helped not sure.
Sent well-buttered extra-mild not-a-complaint in-passing comment to Zen technical staff not really expecting a response. Included Zen & Google pings and also traceroutes. But back it came, pronto, personalised, seems I had touched the hem of the orange robe and was immediately healed......
Dare I say it (no you idiot, chancing your arm if you do!) magic unction piped down short remaining length of copper wires, connection stable, speeds back to what they were before, bunnies our burrow breeding again like Billy Stink. This customer's Zen Rating remains Very High
How many ISPs maintain a decent service desk? Would-be migrators might consider this.....
Obscurity is a comfortable cloak