Sword Calamity is far more superior with its faster melee and pure strength. And the chaos it could bring in the hands of a fast melee man. I also prefer High Performance OS due to its power to increase agility (increases its already high agility), reload up (MORE W3 AND BOOST DOWNS FOR YOU), and higher search distance (I see you hiding.)
Sword Strike feels less responsive and has a slower melee. And the activation of Seed is just too dangerous for its role, even if its highly beneficial (longer boost)
And for those who can't be arsed to go back one page.