Just make sure you get a pair that fits right and invest in some good socks. My foot tends to get flatter as I walk 7+ miles with 25-30 pounds on. The flatter they get the less room I have. So I bought a half size bigger than my normal tennis shoes but still made sure their was no sliding/rubbing in the heel. Everyone's feet are different. Get fitted at a good outfitter and try on as many pairs as you can. I went with a pair of Vasque Breeze GTX and they have held up pretty well over the few hundred miles or so I have put on them. I think socks are just as important though. I have really been impressed with the Smartwool socks as well as the Thorlo socks. Both are great choices.