pummeler was originaly for juggs but with class stats gone, you could even go to the scoundrel's vendor...
Though now I'd bet that both sets have the same stat distribution so I won't matter what you pick. Though you may want some alacrity in your stats, idk about that, if you do, you'd tap into force master's or mystic's set.
Be aware that gear bought with crystals isn't too great though.