Massive phone though...I've got a 6 and I actually find that easier to handle! Metal body and massive phone are a bad combo (as a day release owner of the 6+ i know!) I'm using the S7 Edge at the moment. I don't like all the Samsung rubbish but at least with Google Launcher and messaging app and other Google apps it isn't too bad...actually prefer the dialler now! Thing that is nice is size of screen vs body...can use one handed but still great for Sky Go etc...plus it wireless charges from my IKEA lamp! Why the 5X doesn't have that is just stupid when the 5 did!

​lg g4 perhaps?

I haven't used the other phones you mention, but the camera on the 5X is very good - it's the same as in the 6P but without video stabilisation. Although it's only about 12MP, it has larger pixels than many other phones, which loosely means less image noise. The main drawback is that there is no optical image stabilisation, so it suffers a bit in very low light because it has to use a shorter exposure time to prevent blurring (but the larger pixels help with low light to some extent). dxomark.com/Mobiles has some reasonably good reviews - you can see that the 6P, with the same camera as the 5X, is right up there with the latest iPhones and a little bit behind the flagships from Samsung, Sony and HTC.