Grim_Soul wrote:
Which would be best to grind with?
It depends. If you take the full Cleric tree with all healing spells and buffs for optimal partying, go with Light armor. Light armor benefits both Warlock and Cleric, since most monsters deal physical damage. Even though you move a bit slower while solo grinding as a Warlock, it should not make a huge difference. Cleric benefits a lot more from Charity, Glory Armor, and Favor Armor.
If you don't play Cleric much and you tend to use Warlock, both Light armor and Robes are fine. Robes definitely save you money on MP pots.