Basic Roon Question

Lots of starts and fits in my digital journey . . . I keep migrating back to 100% vinyl listening due to inferior quality and user experience. I can set up a turntable like nobody's business but I'm an IT neophyte. 

I have no interest or budget to seek vinyl-quality sound, or to burn CDs, or build a digital library. A friend has brought over a server in the past so I am aware how local files can sound pretty darn good. But it's not for me. The convenience of streaming with Roon's interface is what appeals, and I'm looking to give digital another go.

Since I don't plan on storing music do I still need a Roon Core? Will a Roon-ready player work OK for streaming Qobuz on its own without causing frustration over app/speed/etc. issues?

I have some Roon-ready players in mind and believe my home network is robust enough. And I have an ethernet port nearby to support it. The one review I've read where Steve Huff was using an Innuos Zen Mini by itself as a Roon streamer was not very positive. However, it was a review intended to trumpet the Roon Nucleus (and did involve local files). I'd like some further insight and any you can share is much appreciated! Thanks