I'd want to die from a sniper bullet to tell you the truth. Least expected thing. Would never see it coming. Could just be walking to the store and *Boop*. Dead. B)
more like your walking to the store and you hear a loudass BAM and then you hit the floor. But besides that your about dead on. Yes, despite popular belief from videogames, a sniper is indeed a rifle and yes, a rifle does need a lot of power to send a medium/large bullet through the air that fast for that long and yes, it does create a loud noise when it fires.
Since every person HAS to die, dying for something you belive or a good in would be the best death, e.g crossing a bullet's path that was meant for some1 else