Paid services have consolidated to a great degree. But I’ve been a long time Easynews subscriber.
They have decent retention, good completion, and are johnny-on-the-spot re. DMCA requests.
Their real claim to fame is an easy to use browser based front end, so no third party client hassles and it works on mobile.
That said, MUCH has changed since the 90s, i.e. encrypted posts, the USENET hierarchy is largely broken and good luck finding any current text discussion (looking at you, Adobe, ya skeevy fucks).