Unless it’s a new form of snappier and more reliable Touch ID, I think I’ll prefer FaceID. Even with Samsung’s slightly more secure Ultrasonic reader, it’s accuracy and usability is impeded when you have a screen protector on. So if it’s between an optical fingerprint scanner and FaceID, then I’d choose FaceID. UNLESS, Apple decides to be nice and add a fingerprint scanner onto the Lock button
10.0 affected my Ultra’s battery, basically reduced it by half a day. 10.1.1 seemed to have fixed it