This is my second pair of ASICS GEL-Kayano 15 Running Shoe.  I have had Brooks for years and loved them.  But these take me the extra miles longer.  I run 40 miles a week and build and feel momentum and endurance beautifully!! I am naturally 8.5 med. shoe size.  The last pair was a size 9.  A perfect fit.  Well worth the money.  I was tempted to buy the Kayano 16, but I loved the 15 so much I decided to go another round with them.  Enjoy!!