I just took these out for quick test and I'm impressed so far. Phantom v1.2 with FPV setup, otherwise stock weight.
http://www.ebay.com/itm/271315359254?ss ... 1439.l2649
Flying a fully charged Turnigy 2200 I usually get to about 7 min before the 1st set of warnings on stock blades.
Just now, on the blades linked above, I got a full 11 min before the warning and it's extremely windy outside. Huge gusts.
With the wind I can't speak to control or smoothness or anything like this but from the seat of the pants that all seems fine. They do seem noisier than stock. Some of that can can be attributed to the wind but I really get the feeling these are quite noisy blades.
Hope that helps some people decide to try these. I'm going to order a few more sets.