I can honestly say I've never had problems with telewest/virgin. I've been a customer for 5 years at 3 addresses and all moves have been easy and on time as have been the upgrades.
As a reasonably heavy phone user I've found the 800 mins -anytime any phone- service very good, as I call a mixture of mobiles and landlines. This route costs £2 more than the vip sevice, ie £87 for home phone 800 mins, 10 meg bb, v+ 2nd box and xl with 500 mins any network and 1000 txts mobile at £40.
All this equates to £4.18 per day.
Though my son gave up on his service in manchester (ntl)