1) Has anybody used these and/or know what the distribution is on the m/atk boost? Equal for all 3? Approximately normal distribution around 8? (~Exponential decay) Highest at 7 and lowest at 9?
[Doesn't make sense to make a separate thread for this:]
2) Should I try using these on my weapon instead of Red 50% +8s? I currently have 190 MATK on my empress staff with 7 slots left; scrolling the rest with +8s (if I even succeed) will get me to 246 MATK, 4 shy of 250 (which is best for enhancement AFAIK?). I have fairly limited resources, so I don't think I can afford 90% +9s, and I won't be scrolling another weapon for a very long time.