Lots of folks with SVT post over at the heart rhythm community. You will be offered a lot of guidance there. SVT is the easiest arrhythmias to cure in the EP lab via ablation. When you decide to have it done, just make sure the EP has done a lot of them and that he does at least a couple per week if not more. The more the better. And ask for his/her historic success and complication rates. A high volume center will get you success rate in the high 90s% with very low major complication rates (less than 1%).