I have a OPO and I can verify all of this. Hasn't been right since I got the lollipop update. Even other ROMs don't quite work right. The input lag gets very annoying. Think I'm gonna hold off thru the summer and cop an iPhone or the next Nexus
I would say wait for the iphone 7 next yr since it will be the redesign, just go to another android this yr if you werent already impressed with the 6/6+ the S model wont blow you away but it will be dope still