pioneer mixers

What can you say about pioneer mixers? My friend is also venturing into sound systems and is considering in investing in pioneer mixers. There's a lot of models to choose from so he's taking his time in doing his research so that he can make sure that he would be investing in the right one. He's aiming at buying the Pioneer DJM-5000 - Professional Standard Mobile DJ Mixer but is still open for other suggestions. I'm excited for him with this new venture. I wish him well. I hope this new business of him becomes a success and that he gets to profit soon, considering the amount he has invested already in his equipment.