fast carbs do increase the effectiveness of creatine but i take my creatine pre-WO. just mix it with apple juice with my pre-WO supp. tbh i cant tell u whts best, it culd be 6 of 1 - half a dozen of the other.
for PWO carbs, ive had alot of arguements with ppl on here about it :P i still dont know a definiative answer. my trainer is a well respected trainer and he tells me 2 stick to whey PWO for protein and just 2 apples for fast carbs. waxy maize isnt actually fast carbs...its a bit of a myth.
http://www.bodybuilding.com/fun/waxy...tarch_myth.htm
and u dont want to take alot of simple carbs like dextrose or malto, their for endurance training! i know scotty said 50g of dextrose, but imo thats complete bullshit!
i stick with just oats for my PWO carbs in my whey shake and and apple. to each unto their own.
theres another article if ur interested:
http://www.bodybuilding.com/fun/post_workout_carbs.htm
sorry i couldnt give u a difinitive answer. GB or fire might be able to.