These are by far my favourite running shoes, I have a long narrow foot for a woman, my feet are too big to wear women's running shoes, so for a man's shoe this sneaker fits the best.  It is much narrower than Nike and most other brands.  My only comment about the Saucony guide 4 versus the Guide 3 is that the Guide 4 is fitting a half size smaller than the Guide 3, so I'd suggest buying the Guide 4 a half size up from your usual size.