I own the original Mix Masters - the one with the mesh issue
I like them personally. They're lightweight and I find that it breathes well enough that it doesn't leave my feet clammy at the end of the day. The 4mm drop is comfortable for me and I have had no foot pains after a hike. However, when walking on pavement for long periods of time, these shoes don't have enough padding that it could cause some foot pain.
I have worn the same pair of Mix Masters since February this year and have used them on varying terrain around the San Gabriel Wilderness, Angeles National Forest, etc. (local SoCal mountains) - so far so good.