I got these after researching many running websites.  I have flat feet and these came recommended for a general fitness running.  They fit nicely and are super comfy while running I can definitely feel the difference over my old ASIC's (which are worn out).  My first couple of times running on them I went about 1/2 mile further than I normally go so the shoes and their comfort definitely made a difference!  They worked my calves a bit more than my old shoes too :).  They are a bit pricey but I buy running shoes every 18 to 24 months so they were a worthwhile expense.  The only drawback to these is they only come in a very drab gray color.  It would be nice to get these in black/pink or something less depressing looking.