I wrote up a backstory chart for Soriatas armor based on Space Marine armor.  A lot of best quality items I'll be willing to create a backstory and unique stat bonuses to, as long as they're sufficiently rare.  That kind of stuff has a story behind it, and many previous owners, often making it a little different from what you grab off the shelf.<br/><br/>(the dragon scale I'll probably roll a history for too, if you go for best quality)