And PIP - picture in picture which sony comes with is a cute feature.
There's also PAP -Picture and Picture. I don't know whether that concept ultimately caught on locally (if it ever did).
My PIP feature appears to be selective on what input channels I can have displayed side by side. It appears to favour the HDMI channel, which I luckily use most of the times.
That aside, I'd vouch for Samsung: I love the ecosystem they have created with the 'allshare' concept