Which stone should I choose?(FTP)

I'm free to play and don't want to screw up by choosing the wrong stone could someone help me.I have the dark reaper ssr weapon and rose sword ssr weapon idk if that helps for stones

I'm free to play and don't want to screw up by choosing the wrong stone could someone help me.I have the dark reaper ssr weapon and rose sword ssr weapon idk if that helps for stones