My favorite gum brand would definitely have to be Eclipse. I really love Eclipse because the packages are simple to carry in your pocket and always keep your gum fresh. Eclipse is sugar free and can remedy bad breath very quickly.
Orbit is mine. It comes in all different kinds. Since I am a smoker I need to freshen my breath all the time. I find it works well to keep from blowing smoke breath at people. If I get sick of one flavor I can always go out and find a different one.