Favourite faction DE? Best expansions?

By Dainank, in Warhammer 40,000: Conquest - Strategy

I am relatively new to this game, and I have discovered that I enjoy playing the Dark Eldar the most. I have no idea what each warlord pack (if thats what they are called???) gives, so I was wondering if anyone could give me some advice on some 'good' cards to start of with and in which warlord pack they are?

Thank You!