Eversolo App isn't bad but their support is non existent. If a FW updates is bad there is no recourse other than rolling back FW which is a pain and then turning off auto update. Now you are stuck at that level until there is a fix. 6 months with no resolve is absolutely unacceptable
Aurender is the other end of the spectrum all together. Almost concierge level support. Auralic and Innuos also have real support , not a forum of enthusiasts for help.