Ten minutes into the trial period of Usenetic I decided to purchase. It's that good. I've been using newsreaders for almost thirty years and currently vacillate between Unison and Hogwasher.
The Usenetic interface is clean and efficient. What clinched my purchase was MegaSearch. My experience of global Usenet searches with other clients has been negative. Too many false hits including too many malicious fakes. Usenetic uses its own mammoth search database and claims ten years' retention, which I can well believe. Within seconds I'd found and downloaded ancient binaries that I thought lost forever. Astonishing.
You pay for use of MegaSearch. One year is included in the Usenetic purchase price, and after that it's about ten euro per year. If you're a heavy Usenet user, Usenetic with MegaSearch is a no-brainer. The feature set is amazing. NZB implementation and compilation of files works like a charm, with plenty of visual feedback on progress.
I only wish I'd found this software earlier.