The best used Ram truck models worth buying are generally the newer Ram 1500s (especially mid‑2010s onward), select Ram 2500s with the 6.7 Cummins, and well‑maintained 3500s if you truly need heavy‑duty towing. In practice, “best” means good reliability data, modern safety and comfort, and engines/transmissions that hold up well when properly maintained. Since I can’t...