Bring in your favorite DVDs or blu ray discs to a non-big box home theater store where you can actually test out the HDTVs in question. My eyes lead me to a Panasonic for PQ, but you may like the Sammy better. There really are no absolutes per se, just opinions based on what we see/hear.

FWIW, 3D is really a bit 'gimmicky' at this stage. I'd use other factors to select an HDTV.