the one is much more polished than the g3, unless you really want the qhd screen i would go for the one
Well that's not really true, i'm in-between right now because as of right now, the G3 has a faster processor, better camera, clearer display, and more RAM. The HTC One M8 has aesthetics going for it with it's fantastic design. The HTC also has a 5 MP front camera (I video chat often), and speakers.
I honestly don't think you read up on them too much because the Quad HD is not the only feature the LG has going for it.
With android will my phone also still be supported in two years? I heard android was fragmented really bad.
Also is there a android counterpart to the "Find My iPhone"?