We’ve talked about a number of the NHJ PMPs in the past but here’s an in-depth review of the MPM-201. They like the UI and the CF/MM card reader, but it’s a pretty hefty device and there are some interactivity quirks like video resizing and no bookmarking.
https://gizmodo.com/nhjapan-mpm-20x-video-player-reviewed-17851
NHJ MPM-201 Portable Media Player [DAPReview via DesignTechnica]