I've played several BluRays and CDs since I unboxed it at Christmas. The player supports all the CD,DVD, and BluRay formats including 3D, as well as SACD. It also supports Miracast. In general, the unit appears sturdy but its lighter than it appears. The tray mechanism doesn't feel as solid as it does on my old Sony BDP-S360. The setup menu is easy to navigate and intuitive, at least to me. Loading times are much faster than the Sony however. From an video perspective, I have it set to automatically upscale everything to 4K and its HDMI output it's directly connected to my Samsung 4K display. The display is crisp and clean and so far, I haven't noticed any artifacts.
From an audio perspective, it does all the lossless high def codecs and the audio sounds good. An interesting note is this unit offers a "CD" playback mode when playing CDs. This mode can be accessed via a button on the unit or on the supplied remote. It slows the rotation of the discs to normal CD rotational rates to reduce effects of vibration and improve on error correction. I use it with "pure direct" mode of the player to play CDs and use the analog outputs of the player. Pure Direct turns off any non essential DSP as well as the display much like Yamaha AVRs .I did not detect any difference between this mode and normal mode going through HDMI interface. Truth be known, I only tried a few different CDs and the tests were unstructured. I don't own any SACDs so I cannot comment on its ability to play these.
I haven't tried any of its apps yet including Miracast.
I'm happy with the performance of this unit from playing discs of all formats and I really like its looks. I still miss and will always miss the "Yamaha orange" of the older Yamaha products.
AVR Yamaha RX-V 1800/1900/1500
TT/Cassette ProJect Xpression III/Yamaha KX800/K720
BR Yamaha BD-S681/Sony UBP-X800/BDP-S360 DPL Samsung 65"/ 55"
Speakers PSB T-45,8C,1B/ PSB 400,200C,RBH A600/ PSB Alphas
Subs Rythmic LV12-R/PSB Subsonic 5/Energy XL-S8