Review on New Balance Men's Athletic 520V5 Cushioning Running Shoes by Dave Goodman

So the confusing thing is that I have bought these shoes 4 times but the 4th pair hurts my feet. I was so happy with it that I've bought it again and again. However, that fourth pair is overkill. Same size, same model, but I have really bad pain in the tip of my foot when I wear them. I hate to write a bad review but I think the construction of the shoe should have been changed. Maybe try it in a store instead of buying online?