I'm not having problems with JRiver for my limited use case.
I think it suffers badly from bloat and features being added at the expense of bug fixing. If developer resources are so limited, why add useless features like skins and visualisations when core functionality still has bugs? I'm glad I don't need the 10' interface or online services features, because they were not fully useable or functional when I tried them.
Problems also exist with some other media players out there. Some seem to merely copy each other for features without thinking about what would really be useful.
For what I need it for, it works well: FLAC playback, VST plugins, parametric EQ, madVR color managed video rendering, ASIO/WASAPI audio, do not need/want online streaming services. But I use other tools for ripping, tagging, conversion, because they work better for me (it is hard to make an app that does absolutely everything, as it ends up being clunky and not particularly idealised to any one task).
I gave up on Foobar years ago because it was incredibly unstable for me: could not make it through an album without crashing, often crashed when starting/stopping/skipping. Perhaps that has now been fixed.
For me, my PC is the centre of everything work and hobby related as I'm in a bedsitter arrangement (it is the HiFi, the TV, the home theatre, art studio, recording studio, software development workstation), so having a seperate device makes no sense for my situation at all (extra expense, no room for extra gear, monitor has far better picture quality than many TVs albeit smaller so you have to sit close to get a movie theatre experience).
Kodi has attractive points (color managed, WASAPI/ASIO) but I have not found any skin that gives it a totally pleasing interface. I'm using it for TV OnDemand and broadcast FreeToAir over Internet. It has inconvenient oddities like requiring Alt-Enter to maximise/normalise the window instead of having buttons to click with the mouse, and plays badly with other applications (locks them out of devices when opened but not playing anything). Work in progress, or very much aimed for standalone devices with PCs an afterthought, I guess.
Open to suggestions.