Lightweight, under $100, zero drop, wide toe box, secure fit thru midfoot.
All of Topo's offerings are low drop, but not necessarily zero-drop.
They also make a trail shoe they tout as completely waterproof; I may get a pair for coaching.
These are superior in every way to Altras, btw. If you like anything about Altras, you need to find a pair of these.
I am not getting any compensation for this, obviously... just giving a little shoutout to a company that not everyone knows about.