After about a dozen flights, I've already broken two prop guards, and don't see myself flying without them any time soon. Has anyone had experience flying a Phantom 1 or 2 with carbon fiber prop guards? Aside from cost, are there any significant disadvantages? The one time I flew without prop guards (I was awaiting replacements), I noticed a significant gain in flying time -- about 9 minutes to first low battery warning on the Phantom 1 without guards, versus roughly 7 min 30 secs with guards. I have some CF guards on order from China (before discovering them cheaper and closer on eBay), and I'm hoping the difference in weight and wind drag will give me another minute of flying time. Thanks!