I recently bought the TR6 version of this shoe from a local brick and mortar store. The 7 1/2 fit me perfectly. I liked the TR6 so much that I wanted to get another pair to alternate and I found the TR5 on amazon at a discount. I bought the same size and the shoes are a good quarter inch shorter than the TR6 so I'm returning them. I thought I was safe ordering the same size in the previous generation of the same style, but no.

The shoe appears very similar to the TR6 which means it has lots of toe room without being wide in the heel, it accommodates a high arch, and feels well padded and supportive, although I added insoles for my arch support. One difference is that the mesh on the TR5 is thinner--if you hold the empty shoe up to the light, you will see light inside the shoe. This doesn't happen with the TR6; however the TR6 mesh still lets moisture in if you walk through wet grass. One thing I didn't like about the TR5 is that the "leather" is somewhat shiny. On the TR6 it has a matte finish, but this is just a minor cosmetic preference.

I am not reordering this shoe because, who knows, maybe the 8 wouldn't fit me right. I've never worn a size 8 in my life. I'll get another pair of the TR6. UPDATE: No I won't. The TR6's practically wore through at each big toe in 3 weeks. I have never had that happen with a shoe even after years of wear. My socks don't have holes at the toes, what gives? I called Saucony and they told me to return them to the store where I bought them and I was given a full refund.