B.A. Beckwrote a review of Saucony ProGrid Kinvara Trail Running Shoe - Men's on September 16, 2013
Familiarity: I've used it several times
Stiff sole transfers energy efficiently. The tread pattern gives awesome traction.
Heel cup is a bit higher than I'm used to, so I definitely had some friction while I was breaking them in, but it's been worth it so far.