I have the 3's. No experience with the 2's. The good thing about Merrell is they have great customer service just like ESEE. If you look on the forums over at Merrell you will see that anyone with a problem is promptly taken care of. The sole coming loose seemed to be a common problem with the earlier models from what I've gathered. The people who had the issue got replacement shoes right away. If anything I would say mine ran a little big. I'm a snug 10.5 but with these i have a little room to spare.