The chunky, top-of-the-range X is intended as a studio centrepiece, while the Live is all about portability. Rather, each model suits particular needs. While the One extends the MPCs into a lower price bracket, the range doesn't really follow the traditional Good, Better, Best template for a product range.
It also comes just a few months after Native Instruments didn't release a stand-alone Maschine, as had been anticipated, at a time when more and more people are looking to enjoy music production outside of their laptop. The appeal may also be that it looks like a traditional MPC such as the classic 2000. It mainly repackages existing elements from the established MPC Live and X, but at a more affordable price.
The MPC One seems to have triggered a swell of new interest in the MPC. The MPC One offers the most affordable way into the latest generation of Akai's celebrated sampling workstation.