if you do have a choice moneywise I 'd always pick a Bow (the best that you can afford, though Soul Bow<Cheap Shot> is a solid choice) for PvP and either a DLE <Critical Damage> or, of course, a DS <Critical Drain> mainly for PvE.
If you need to stick to B-grade weapons:
BoP <Cheap Shot>
Greatsword <Focus or Critical Damage> or Dama <same>/Kesh <Focus>
I'd refrain from using Blunts and Duals at all and as far as Daggers go I can offer you no practical experience.