Would never ever go back to British Gas as they had the worst billing system i ever had the misfortune to use.
Been with EDF for last 6 years and been very very good and managed to get some excellent 2 year fixed deals.
However i noticed that when my fixed deal ends in June they don't seem to be offering any great deals anymore whereas previously they used to be the cheapest of the big six.
Will be watching this thread with interest.