Of course that you don't buy it. It's free. Can't tell you anything about that browser since I haven't used it, only seen it and heard from a guy that is using it that it's faster. I doubt it, but fell free to share your experience with it.
I can add my knowledge of Chrome. It is indeed faster than every other browser I have used(IE, Firefox, Opera, and Safari). It is very simple, easy to understand, and is starting to get a good collection of add-ons.