Far less odious for me is Media Monkey. Free version available to try.
The sound is the same to me. The issues are all with the user interfaces.
Heh, everyone is different. I use JRiver from a Windows 7 PC. I have used the JRemote app from my ipad and it works well. JRiver also works excellent as a DLNA server. I have streamed my files down to both a Sony Bluray and an Oppo bluray playing in my home theater system (played through HT processor).
As far as easy to use, the JRiver has a whole lot of configurability, so you might run into scenarios where you have to dig into the settings and tweak something for your specific device/configuration. It’s definitely not a plug-n-play iTunes.
I -think- I auditioned Media Monkey several years ago and, if I remember right, it handled FLAC files poorly (sound quality was degraded). I don’t know if this has changed, but it’s something to research if you use FLAC. It used to be that media software was not always the same when regarding the compressed FLAC (JRiver handles this great).
I guess I am the one who has mixed results from Fidelizer. I think on my laptop, it seemed to improve things. However, on my desktop, it decreased the overall sound quality and naturalness of the audio. It seemed to change from hi-fi to lo-fi. I think Fidelizer might be doing weird things to the timing of internal O/S processes.
If it works for you, great!
I prefer media monkey in large part due to how I like to organize my music libraries on disk. I think MM does the easiest/best job with this, and also makes it easy to re-organize them if I store incorrectly.
I also find MM gives me much better fedback re: WTF it is doing at any given time during the ripping process. JRivers just goes off and does things in the background so you don't know what it's doing or what you can do in case you want to change something.
For purely music playback I have little preference.
I use JRiver and the free Gizmo app on my Android phone. Took me a minute or two to get the port forwarding to work. I did not see the need for spending money on the remote app. Plus Gizmo works well for my needs.
Hopefully you have spent some time assessing it as there is a lot of functionality with it and at times can be somewhat complicated without some research. The other day I was able to rename all my files, organize them in new folders all with one command.