Aurrender. It is all they do, and are the best at it at every level. I own two and have heard many others. I would recommend the N200…but a used N150 or maybe you could get a used N10.
They are built like tanks and the sound quality and support is superb. The conductor App (how you control from an I pad or phone) is well respected, easy to use and gets better every day.
If your router is not near your system. Use a wall wart wifi extender and plug via Ethernet into that. My $150K reference system works that way.
I have been streaming for over twenty years. This is a no brainer. I have tried streamers from cheap through $3K —>$22K.