Anyone that has had experience with or knows about some of the super spikes, how do you like them and which model are they? I've tried both the Nike Air Zoom Victory and Dragonfly, and both are fantastic. I'm wondering how other brands compare? Has anyone tried the new Brooks spikes, they look just like the dragonflys and I'd imagine they're sound. Anyone try either the new Adidas Avanti or Adidas Ambition Spikes? Or the New balance spikes? Very curious to hear what users of other shoes have liked, and if you've tried several pairs, a comparison would be appreciated. I found the Dragonfly's good for anything 1500-10k, even 800. Victories seemed great for 800 and 1500 but nothing else. Seems like Maxfly could be a good 800m spike as well for more advanced runners. Thoughts?