I used to love Shoot'em ups - today they are very hard!! - so one of my favorites was always this one:
And fun-fact, the ship is called VicViper, a name which I always found catchy!
But just now I discovered there's another VicViper in Vgchartz (Vic_Viper), so maybe I'll exchange for my other choice, Pentarou or Opa-opa - one of my favorites!