As I learned DnD on BG1 I'm not convinced about Warlocks - too new, we didn't use to have them back in the day, etc. smile
My personal take on them is that they are a variety of Sorcerers - some are born with Powers, some sell their souls for them. And the boring people - Wizards - GASP - you'll never believe this! - actualy read BOOKS and STUDY to have them Powers! The horror!