Not a runner but I have a couple of pair of Lemings which I love. I think they are a little large for my size 5.5 but I wear them with my Injinji toe socks and they fit well.

I also just ordered a pair of Kigo Curvs which are a Mary Jane style. The Curvs run narrower which is why I'm trying them. Haven't received them yet.

Of course, I love my 5 fingers but mostly wear them around the house.