Board Thread:Game Discussion/@comment-201.143.238.15-20130810063801/@comment-76.248.30.211-20130813020951

Both, plus whatever else you can throw at it. Never use basic armors to enhance higher tier armors; instead, use them to enhance and level up some Uncommon armors (e.g., Stonescale, Seafoam, etc.) before using to enhance your higher tier armors. The rarer the armor, the more it will contribute to enhancing another armor. You also receive one enhancement point (EP) for each level above one for enhanced armors; hence, level up lower tier armors to enhance higher tier armors. Note, as with leveling up your Knight, the higher the armor level the more EP required to advance to the next level; once you get past ~lvl 25 enhancement it really starts to take awhile.