I have 1012 guild coins.
I don't do guild battles, so I get coins from conquest duels, about 20+ per day.
Warbringer Greaves would give me +10 piercing, which I will need eventually and costs 1000 guild coins.
Heal Skill costs 1250 guild coins and would give me access to Hunter Path points, and open up the resistance items and skill points.
So which item/skill should I go for? Remember, my guild coin income is limited.