I agree thats a fairly sound argument, but most people set their adjustables by plugging a guage into the fuel rail, thus you get a new adjustable and set it exactly the same. A fixed one will have a tolerance, and you won't be able to dial that out. So an adjustable will inherently be more accurate because you set it the same.
i'm gonna bet a guage permanenetly plumbed in so i can keep an eye on the pressure, what with having shelled out for omega pistons etc, i would like to know if i'm running lean!
chris b, am running same revs as andy but i havent got steel rods, couldnt afford the 800 quid premium at the time, had my rods tuftrided though and they seem fine, even after a year and a halfs canning