Sick Sinus Syndrome

I have recently been told I have "sick sinus syndrome". This is not a foreign term to me, but I am queswtioning the best plan of treatment for myself. The EP DR is offering to put me on flecanide or rhythmol to try to control the symptoms, my internist feels that those meds may have too many long term side effects for me. My cardiologist wants me to be conservative and try the meds. I do have sinus arrest, PVC's and have had 2-3 days runs of tachycardia in the 160-170's. Initially I was on verapamil to control the SVT, now we are weaning that off and in a wait and see mode.  My EF is 57%. I have some mild Mitral valve regurg and when I get brady I get as low as 34 and very symptomatic. The EP DR is hoping the decreased and ultimate DC of the verapamil will get rid of the severe bradycardia. I was looking for another perspective.
Thank you for your time

[Jerry_NJ]

I'm not sure what the long term affects are that concern you the most.

I have used Propafenon (generic Rythmol) for several years, and no side-effects I can detect.  I am an older person, so it may not be a major concern.  If it take 20 years for the effects to be a problem....