Sorry TWOHAND, but I have to disagree with you on the Arch Rival, because it will be too strong of a ball, again same reason as Resurgence, ball speed is just too slow.
If the Rival is just a little to strong in the mid-lane oob, he can just add some polish to it, as the Rival takes well to surface changes.
I am unsure about the Arch Rival, except that I know it is stronger down lane than the original, I have never thrown the Arch Rival, so I am not very helpful with information about the Arch Rival