Let's play the game One Of These Things Is Not Like The Others. Which pair of shoes is not like the others?
Answer: the pair of shoes on the left. These are my new ride. (They look remarkably similar to my previous pair of running shoes, and the pair of running shoes before that.)
The other two pairs of shoes have each carried my chicken legs around 450 miles.
Experts recommend changing your running shoes every 300-500 miles because the cushioning and support break down and leave the feet and knees more susceptible to injury. (Although other experts recommend a minimalist approach to shoes - certainly a whole different discussion.)
The first running shoes I ever bought were Saucony Progrid Guides. They were like music to my feet. And since then, they have been my shoe of choice. My friend Liz calls them "clod hoppers" which seems accurate. They are heavier than many running shoes, and I want to slowly migrate toward lighter sneaks. But these have worked well for years, and basically I figure "if it ain't broke, don't fix it."
The cushioning and support may be lacking from my old shoes but they are still in good condition and make good shoes to wear around during the day. In fact, I love my old running shoes so much that I can't bear to part with them. Hence, I have five pairs of running shoes sitting in my closet.