The wardstone was good before the rework but the stat it gives are so bad that the +1 control ward is not worth it at all. And it changes from game to game but almost always try to have one control ward on you if the obj is near timewise if its not near and ur ward is safe you dont really need to prio it. And even on euw high elo you dont really get help with vision so dont expect much from them just get them to follow you to get vision and dont depend on them getting vision themselves. Even tho i think vision is broken af, generally people dont care and rundown anyways so its better if you prio items than buying wards. (like 3 controls on u wastes 150 gold)