I'm using a 793MB myself and have also installed dozens of them for clients. I can't say it's the best in the market but It's very good. Sharpness, geometry and convergence are very good.
Whether the Magic Bright function is useful or not depends on the user. It may be no more than a marketing gimmick to some, but to others it's very useful, especially for those who frequently switch between different types of tasks such as word processing, games, internet, movies, etc that require different levels of brightness and contrast.
Switching between preset levels with a single button is much more convenient than fiddling with 2 or 3 levels of menu selection and the up and down buttons.