I seem to only ever get purple class mods I don't like. I've found piles of purple trickster mods, yet to find a single purple binder mod.
Of course the purple's are only really useful if you're actually using all 3 skills it'll boost. I'm happy with my green binder mod that gives me 20% cooldown reduction and +6 helios. Burn well, burn often.
You're the stranger, ain'tcha? Are you looking for a nice, clean place to stay? Madam, I had a nice clean place to stay... and I left it, to come here.