I’m also in the market for a budget yet still very good streamer and have done quite a bit of research, and the best option I’ve found considering performance, cost, and ease of setup/use is the iFi Zen Stream that retails for $399, but there are new units available from an authorized dealer for $325 that makes its value even more attractive. As others have said you can use the DAC in your Yammy to get started, but you’ll get much better results by upgrading to a better standalone DAC. Another component that should be at the top of your upgrade priorities is a dedicated stereo preamp as the pre section of mass market AVRs are huge bottlenecks in a system and are a death sentence to achieving good 2-channel performance. Just my $0.02 FWIW, and congrats on your return to this awesome hobby and have fun rebuilding your system.
(p.s. The audio gene never dies — it just lies dormant until something, like an awesome wife!!!, reawakens it.)