Mirage & Glow Flashabou

Mirage(Opal) makes a brighter flash than pearlescent or (Metallic, if that's possible).  Narrow fibers, lots of fiber pieces in the thin hanks, a very effective flash.

Opal Magnum is generous double sided hank with longer wider fibers.  My favorite and your best value for large and medium streamers.

1/100 opal is just like regular opal but cheaper package.

Glow In The Dark is not flashy, little movement but strong Glow.   Use in streamer wings mixed with some Silver or Mirage that will reflect the glow for more shimmer and movement.  Can be wound as a durable glow body material.