I have a few posts where I mention RoadRunnerSports.com to find the shoe that is right for you.
They're having a deal where their VIP membership which gives you 10% off anything in the store Including Apple products, (usually a $20/yr fee) for only $1.99. You get Free shipping and 10% off. Not a bad deal.
I like Roadrunner because they have their system called "Shoe Dog" A foot/shoe fitting Analysis system.
1- The have you step on a platform which measure where you put all your pressure on your foot. Some people put all the pressure on the ball of their foot, others the heel, others their big toe or little toe.
2- they have you run or walk on a treadmill while they video your stride. They analysis how your foot strikes the ground, if you're an neutral, over or under pronator (if your ankle rolls inward or outward)
3 - they measure your foot, and do all other nifty things.
They then recommend a shoe that solves all those problems for you! Either a Neutral, stability, motion control, etc.
However, not all brands are created equal. They may feel great in the store, but once you try them on the road, they hurt. Not to fear! They have a 60 exchange/store credit policy. You can take the shoes back, after you've tested them a few times, and get another pair until you find the one that is right for you.
Its rare to find a place that will take shoes back, even after you've worn them.