Samsung C550
+FULL HD panel very crisp for 1080p native games and movies with digital effects
+Very good input and pixel response time (Little to no ghosting)
-Overly bright panel that washes out/pale out colors
-Mediocre cable TV performance
Panasonic X20
+720p panel that is even better than most FULLHD LCDs when it comes to movies
+Very good and accurate earthly colors
+Very good cable TV performance
-Green ghosting/Phosphor lag during FPS games and movies with high contrast areas
-Mild image retention after games and/or letterbox movie watching
-Reflective screen
You choose