I owned an tried to like Chacos but ultimately returned them.
I found them to be unreasonably heavy, in fact I weighed them and they where heavier than a pair of light weight boots. Not familiar with the current models, but I had the lighter version with the smoother sole. There was a lugged sole version that better for trails but even heavier than the one I had.
I found the strap system very comfortable but difficult to adjust, though once you got used to the system it was easier. One problem with the straps I had however is that they would not hold their setting. I would leave them slightly loose and as I walked the strap around the instep would tighten and the forward straps would loosen. The more I walked, the tighter the instep strap would become. I called Chaco and they suggested putting sand in the straps where they go into the sole to increase friction.
At that point I returned the Sandals.

