Where I live near Dartford the robbing F**kers at my local Shell always price V Power at 10ppl more, where as in town it's 7ppl more and starts at 4ppl lower, but just not worth driving into town to save 7ppl. Currently paying £132.9 a litre for V Power.
Although the GTI is long gone, my M3 will not run smoothly on normal unleaded, and it's as fast as filling 1 tankful of normal unleaded before the car gets juddery low down. Have back to back tested tankfuls and they are that sensitive to it. Some M3's act like this, others seem fine without it, although mine is tuned which probably accounts for some of the issues.