I am a big guy, 6'5" 255# and usually go with motion control running shoes. I am no longer a runner but I have found cross trainers to be too hot and heavy. Running shoes just do not hold up very well to my activity which ranges from walking to working out on a heavy bag. These shoes, however, are great. They are very comfortable, very light, and not to hot. While they do not give much as much support as a motion control shoes, since I am not running anymore, I don't really need that much.
As far as the fit, they have a pretty wide toe box, with good height. I have found that some Asics shoes have a low front to the toe box which irritates the top of my toes. These are roomy but still have support. They also are right on for the size. I wear a 13 and these fit just right. With Saucony, for instance, I have to go up a size.

I will buy them again unless they fall apart in the next cople of weeks which I doubt will happen.