[Mr. Mike]

Asking for recommendations for carbide tooling is still a little too broad of an area to answer.
Let’s start by answering a couple of questions first.
What type of turning equipment do you have? Are they beefy industrial like an old Monarch or hobby grade like a small Atlas or Craftsman? You mentioned that your machines are worn. Do they seem to have a lot of slop in the carriage and cross slide?
What type of tool holders do you have? Can you hold inserts or only square shank tool?