Propranolol vs Atenalol for anxiety, high blood pressure and migraines?

I have been on atenalol for many years. I was taking 200mg for a short time for my blood pressure then 100 mg and now have been on 50mg for about a year. I have been diagnosed with panic disorder, general anxiety disorder and moyfascial migraines. My doctors have tried so many meds but have had horrible side effects from them (especially effexor and nortrityline). They are now switching me from atenalol 50mg to propranolol... is this medicine just as safe as atenalol and should it work better?