Clearly I'm not going to argue with facts

.. if someone has actually done a comparison and noticed a significant difference then obviously follow their advice. My comment was simply based on the assumption that the 868 can't output the same resolution as your display (I don't believe the 435 is 1280x720).
In this case the 435's scaler will still be kicking in, ie. if you output 1280x720 from the 868 the 435 will still scale from that to its' native size. If someone has seen a marked improvement using the 868 I can only presume that in spite of this 'double scaling' that's superior than the 435's own attempts to scale normal SD.