So far I turn motion processing off and the smart part. LG never did or I never found there response to
http://bgr.com/2013/11/20/lg-smart-tv-spying/ so it's pretty clear the smart tv makers have some lessons to learn.

The one item that seems to tip this over is the active/passive. For me 3D isn't a big deal so can't weigh in there but if 3D matters, go with what works for you. That seems to be the one point that tips it one or the other way given your post.
Bob