How do I pick running shoes?

I've been running a lot lately, and sometimes my feet will hurt real bad. I think It's
because of my shoes. I'm currently wearing Nike span 6+. I think the problem is that my feet are too wide for the narrow fit nikes. What shoes would be best for me to use?
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buying gold and silver

You should buy shoes that has extra size example if you are size 7 you have to buy shoe size which is 7 and half because of feet expand as we walk or running.

You might also look at getting a special insole and cutting it to fit your shoe, which would help the bottom of your feet from hurting. Also, you might try switching to running on an indoor track or on an outdoor path that has the soft asphalt.