Study participants shall have a 1:1 chance of getting either ablation of all 4 PVs vs. only the PVs that are shown to start AF and also for creation of the radiofrequency ablations you have 1:1 chance of being enrolled either in the arm that utilizes the standard catheter vs. that which utilizes the saline irrigated cooled tip catheter. The duration of your participation in the study will be for a maximum of 12 months. This trial is being conducted in approximately 300 patients.