The F5500 is really good in a dimly lit room. Its blacks are deep for an LED.
Even with the lights on or in view of windows, the F5500 is pretty good, with very few reflections.
Almost no reflections are visible (except for in direct light, of course) when displaying a brighter scene.
The only downside of the F5500 LED TV is its narrow viewing angle. As soon as you are of axis, discoloration appears. If you need a wide viewing angle, you will be better off with the LG LN5700.
The F5500 has low motion blur for an LED TV of its price. It doesn't support 24p playback or motion interpolation, though.
1 Component In
1 Composite In
1 Digital Audio Out (Optical)
1 Headphone Out
If you do not need a wide viewing angle or fancier features, buy this TV. The Samsung F5500 LED TV has very good picture quality both in dark and bright rooms.