As a more offensive player who doesn't block that much I personally love the small leather shield, weighs 0.5, has the fast parry and the same stability as the bucklers with almost no requirement to wield, pretty much on all of my builds now.
The fire effigy shield is really good too, once it's maxed out it ends up with 90 physical, 90 lightning and 84 fire resist which is pretty amazing for a light shield, though the faith requirement can be a hindrance.