Not had much taste for Zwei's. They're cool, but they're just not for me. Personally, I like how they used great swords like in Berserk. Give em to huge muscly men (Or women) and start cleaving through sheer force rather than the sharpness of the blade, though it helps. Though I've always been more of an Axe guy myself, but there aren't many cool pictures of heavy armored knights with giant axes that don't look like giant golems or robots.