Just got mine, used them for a run and a weekend trip. Can´t say anything about durability. Well, I love the sole, I like the weight and the flexibility. Good grip around the heel. I´m disappointed that the toebox is as narrow as it is, though. Strange in a shoe that is so clearly geared towards barefoot enthusiasts. It seems narrower than inov-8s bare-x 150, which I don´t understand the reasoning for. I sized up halv a size from my normal shoes, but I should have sized up a full size. Now I can only use it barefoot, or with very thin socks. I wanted to be able to use them with thicker socks, and maybe even neoprene, to expand their use into shoulder seasons.
Can´t really comment on the other shoes, as I haven´t used them.