I use the 793MB and I love it..... I have not had any problems with it.... and it works beautifully....
It is almost the same as 793DF except for 2 differences.
In the MB(Magic Bright), you can adjust the brightness if the screen with 4 modes. Text. Internet, Games, Movies.
The brightness increases from each mode and movie mode is the brightest. The difference is very obvious.
And also, the DynaFlat is white(or beige) in colour while the MB is black...