Which hairspray is better?? (Aussie vs. Schwarzkopf)?

So Aussie Instant freeze hairspray or Schwarzkopf Got2b glued freeze spray??? Which holds better? Which lasts longer? Which doesnt cause dandruff or flakes? Which doesnt darken hair? Which is just better? I straighten and tease my hair, so I need one really good, Heres a pic: http://www.flickr.com/photos/64244951@N06/5847420272/in/photostream And: http://www.flickr.com/photos/64244951@N06/5847420268/in/photostream/