atrial node ablation

I had my first bout with a-fib this May. I was cardio verted. and was okay.
In July, I had a pacemaker put in to regulate heart rate, which was low.
In September, I had an ablation for PVC that took 6 hours. Two days later, I was back in afib. I was carido verted in Oct, but it only lasted 4 hours and then back in afib. I have taken numerous meds and no better. Two different cardiologists are recommending I have an atrial node ablation and 100% paced on upper heart. Is this the best remedy?

thanks