I would call it the "new OP-Z." It's amazing, but it comes with several flaws.
The sound engines are rich and full, while the effects are decent. The reverbs are usable, but you'll likely want to replace them with software-based options or some pedals eventually. The filters are functional, but they sound cheap. On the other hand, the modulators are impressive.
The DX simulator is spot on, although the sample engine is quite simple and limited. The built-in batteries can last for hours, but the built-in speaker sounds like a cheap Chinese radio.
The biggest issue is the button located below the record button in the synth section, which is quite common. You have to press it firmly, and this can sometimes result in double presses.
In summary, it feels like a limited and peculiar mix of the K.O.2 and the OP-Z.