Additional Study Information: The study aims to compare the effect two different RA treatments on cardiovascular health in patients who are considering a treatment change. The study is recruiting patients who are only taking methotrexate and are switching treatment due to a lack of improvement. The trial will randomize participants to take a TNF inhibitor (Enbrel or Humira) in addition to their methotrexate or to take Triple Therapy (methotrexate + sulfasalazine + hydroxychloroquine sulfate). The study will provide you with all trial medications (excluding methotrexate) for the 6-month duration of the study. Study involvement requires two FDG-PET/CT scans and six follow-up visits over a period of six months.