Imagen your a WHM/NIN, wouldnt this be a good weapon.
Buzdygan
Damage 34 Delay 300
MP+10/DEX+2/VIT+2
Darksteel Maul
Damage 39 Delay 340
Att 10
Buz will give you a faster hitting weapon and do just barely to even notice less damage, while the Dark just gives you power and slows down TP gain. Plus with Dex and Vit, I think you hit more ^^ <~ (not 100% sure if im right)
Well let me know what you think. I would experiment but the Buz cost hell-a-more than the Dark....