TRD23

I am in the market for a new TV and have been doing my research but have now reached a crossroads on that familiar question of size versus quality. If we take the Samsung Series 6 75" UHD LED (UA75JU6400W) versus the comparatively priced LG B6T 55" OLED - is there a clear winner between the two? I accept that the better picture quality will be with the OLED but is it really 20" worth of better?