Those are very different controllers to a mixtrack. The mixtrack pro is designed around the layout of a traditional decks + mixer combo. These have jogwheels and pitch controls and EQ controls. The launchpad & midifighter are basically just a bunch of buttons that can be mapped to control various things such as triggering samples or controlling effects etc Not to say you couldnt use these to DJ but its a completely different way to do it. People often would have a controller like the Mixtrack and have one of these cotrollers in addition to get a bit more creative.
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