I think you'd fall into the 2% gainz (fastest runners) so maybe 20s but that's still pretty amazing. People reported a loss in performance after just 100miles though which makes them even more expensive!
However that Alpkit bag looks good value at £45
Interesting. Rough maths means they should be worth 40s to me over 5km. That theory I'd like to test, but not at $250.
Nice to see both Asics DS racer & trainer score quite well in the comparison table. #fanboy