Hi there Max, good to see some international interest here! I think what has the biggest affect on how the snakes look as an adult will be the quality of the pastel genes as well as how high the white sides on the spider are. I also feel that VPI is by far the best axanthic and holds the contrasting black and whites best at adulthood. I am working on producing some VPI axanthic bees myself, among other things, but am still a number of years away from it. Anyway, this picture is of a young male at 350 grams, but was the oldest one that I could find pictured.
http://www.reptileforums.co.uk/forum...al-python.html
Good luck in getting one, if it's what you decide to go with!