Climbers Point

For me the fit of climbing shoes has always been the same based on the shoes. I haven't changed my shoe size since I started climbing a few years ago, even when I try on shoes I already have, like the Evolv Shaman 2, I still find that the best fit is the same size I got when I first bought them a few years ago.

I don't really think there is a general best length. For me personally, I cut them just enough to not be too short, but don't leave enough to hear the nails on the wall. If they are even a little bit longer than that, they tend to sometimes get bent backwards while grabbing the holds, which obviously is not very pleasant.