the OS are forgiving. you can feel when you hit them off center, but the ball still goes straight for the most part. if you really hit one off the toe or heel they go off line, but thats any iron really. thin shots feel like thin shots. lol. feel kinda hard and you can feel it in your hands a bit. if you just kinda bottom groove it, you can feel it, but its not bad at all.
im a bad person to ask about nike golf. lol. the only stuff i like from them is their clothes and bags. lol. ive never hit the VR irons, so i dont have a full opinion on those, so maybe someone who has hit those can help out....
i hit the callaway x18s, but not the tours. they were pretty smooth. i like callaway wedges and long clubs, but if you dont get the tour models, alot of their irons are closed a degree and that throws me off.lol.
id go for either the os or the x18s personally.....the os just cause im biased towards them. haha!