This chart shows the stat result for melding all materia types to all HQ item LV 70 crafts. I am 4 pieces away from finishing the entire set and melding them all, so I thought I'd post this to help players who can't afford the time or money to test out all the combinations. Also provided are my optimal stat combinations that I chose to meld on my gears. I derived them using damage algorithm analysis mostly based on a site called BLITZBALL: http://valk.dancing-mad.com/
I dont really want to get into the stat discussion here but I have decided that VIT > Skill/Spell speed > Critical > Determination for all gears.
Good luck with your melding!
LINK TO MY CHART:
http://img703.imageshack.us/img703/4468/y0to.png
When I am done completely I will clean it up and order it by set.