Currently Bartini Enterprise in CF 464. It's a high tech Empire system with some pretty decent equipment. It's right next to Delta Phoenicis which is where I begin my loop when running rares (something I've not done since getting a Lakon 7). it's next to a decent mix of agriculture, refinery and industry systems so there are some pretty decent trading opportunities. And it's a shortish hop over to either Achenar or Tarach Tor (for all your high-tech , black market anarchy system needs).
The only downside is that I don't see a great many players out there. A few, but not many.
Glad you enjoy visiting Tarach Tor, i named the planet and the station as part of my KS pledge