The company has been around for a long time and their products are often sold also under other brands (just like Medeli). I like the two main grand piano sounds of the recent models based on YouTube videos (https://www.youtube.com/user/dynatonecorporation
), but don't really know anything beyond that. The recent models do really look good just based on specifications, but that's not the whole truth of course.
In Europe a few models are sold e.g. under the names Steinmayer (the latest models), Broadway, Digiano and Pianova (mostly older models). I haven't seen much reviews apart from Broadway at UK Pianos where everybody always absolutely loves every model.
Would be fun to try one out, but they are not extremely cheap, though the SLP-250H is probably the cheapest digital piano I could get with a tri-sensor action and both damper and string resonance and the DPR-3500 the cheapest one I could get with all that and also (more or less) wooden keys, accompaniment styles and cabinet resonance. (And a UI that doesn't force me to buy an iPad!)
But it's even hard to find any demos of all the other sounds let alone the accompaniment styles. And even harder to see a one in real-life. (I personally would have to order from Germany with the option to return within 60 days.)