You really have to get yourself to a specialty running store and have a salesperson help you. Everyone's feet and gait are different, and what works for me may not work for you. He/she will see if your foot is wide, narrow, or medium and go from there. Then he/she will watch you run a short bit, either in the store or on the sidewalk, to see if you pronate, overpronate, etc (that is when you turn your foot slightly out while running). From all of this, a recommendation for a brand of shoe will be made. I have been running for 15 years, doing races of all mileages, and I can tell you that the right shoe makes ALL the difference. I have a wide foot and I overpronate, so I have been happy in Brooks for years. Right now I have a "winterized" pair with a leather body and a more rugged sole, and wouldn't you know, we are having the BEST winter here in NE, not a drop of snow to be had as of yet! But I love them and will go back to the more breathable Brooks variety in April. Good luck!!