Good you are getting MRI/MRA...and seeing a Doctor...
Coiling is less invasive ... however, I don't think one is really better than the other, but which one is better to stop the annie from growing and rupturing...I would wait to decide anything...until you know what you are dealing with from your above symptoms...hard to say...but, one step at a time...
Sending you some Healing prayers...and glad you are getting tests done...Colleen