Everywhere you look on AV related sites you will see this debate. Mitsu or Sammy. Well, the facts are these.
Sammy pictures to many have been described as more smoothed and film-like while Mitsu pictures look more defined and "harsh" to some. By harsh I mean crisp and less smooth. Some people like smooth. Some like crisp.
Other than that, the real question you should be asking is "where can I view a Sammy and a Mitsu". Only your eyes can tell you if that TV is right and only you can find out if things like RBE occur for you and your wife. They are both excellent brands. Go look at them and do a test based upon price, features, and how your eyes perceive the picture. If you are getting your TV based solely (or even moderately) on reviews then you may as well just buy the one you think you like and save everyone the time of reading and writing about it. Without looking at them and comparing directly, the debate is moot and the outcome will be the same. You would be buying a TV based upon someone else's subjective opinion. You are better off making your own opinion which is, of course, just my opinion.
Cheers,
Wiley
PS. My eyes prefer Samsung too.