The weapon alone cannot be taken into account when deciding what to arm yourself with. You need to find one that suits your style of play. You also need to think about what you want to do with your character later in the game. The secondary profession you want to aim for will heavily reflect upon your choice of weapon. The following is a summary of available weapons, not taking into account skills, passive effects, and inherent abilities of your class.

Knight Dual Swords: strength - higher attack value weakness - loss of extra armor provided by shield attack type - physical	Knight Swords & Shield: strength - additional armor value provided by shield weakness - lower attack value attack type - physical
Healer Scepters: strength - long range attacks and higher attack value weakness - slower hit rate attack type - magical	Healer Bows: strength - ranged physical attacks and a faster hit rate weakness - lower attack value attack type - physical
Mage Wands: strengths - faster hit rate and ranged magical attacks weakness - lower attack value attack type - magical	Mage Staffs: strength - higher attack value and ranged magical attacks weakness - slower hit rate attack type - magical
Rogue Crossbows: strength - ranged attack and faster hit rate weakness - lower attack value attack type - physical	Rogue Daggers: strength - higher attack value weakness - slower hit rate and close combat attack type - physical
Sorcerer Scythes: strength - higher attack value and melee magical attacks weakness - slower hit rate attack type - magical	Sorcerer Fallarms: strength - faster hit rate and melee magical attacks weakness - lower attack value attack type - magical
Titan Axes: strength - higher attack value weakness - slower hit rate attack type - physical	Titan Swords: strength - faster hit rate weakness - lower attack value attack type - physical