New arm for TW Acustic Raven one

Some advice ladies and gentlemen. I have used the Raven one, the earliest model by the company, since 2008 I believe. I have been using the Ortofon 309D tonearm for most of that time, a good partnership I think. It was recommended this by Thomas the tables designer, if I couldn't afford the Phantom, which I couldn't.

The Ortofon wasn't new when I bought it, now it is failing and the company no longer support maintenance on their arms. So what arm to get now.? I have retired, so am on a tight budget, putting most arms including TW Acustic's own, out of my reach. One answer would be to find a second hand Ortofon, but any other suggestions please, preferably one I can find second hand? Thanks