Xero are my go-to running shoes
"I have been wearing Xero shoes for a few years now, buying from the US site until recently. I was very pleased to receive my Mesa Trail II shoes quickly from the fairly new UK site. I had ordered half a size up as advised on the site (and on the US one in the past). Xero still seem to make sizing overly complicated! When I found the shoes too big, the free returns service was excellent, swapping for the normal size I wear, which were delivered quickly. Very pleased with the shoes on my first run in them, barefoot feel with protection on the rather lumpy gravel trail. Thank you Xero."