Another thing to consider in the Wiim/Rose comparison is product viability going forward.
While the Digital output of either is near identical, that is only guaranteed today. These streaming devices are 80% software and while your needs may be simple, all streaming services change over time. When they change, you can easily lose utility, or at the very least sacrifice new functionality you may want. This happens every year with streamers that are orphaned, even very expensive ones from established brands. Wiim has over a decade of software development, is the market leader, and updates their products. monthly.
While replacing a streamer a year or two down the road may not be expensive, you then need to install and re-learn apps. Its a hassle. My guess is Rose did not develop their own streaming software, even so, you depend on them to update their devices which most mainstream audio companies do not regularly (or ever) do.