Ridden with the original Wary impact avi vest for 2 seasons and I like it - distributes the weight well, fairly comfortable, and has built in chest protection.
There are 2 things I don't like about it. The first is where to position my beacon under the vest. I've started wearing it low and on my side but that prevents me from wearing the vest snug on that side. Also, throughout the day the velcro on the sides comes undone and back part slides down as the straps do not keep it from moving. I'm not sure if these issues have been addressed with the newer version but it looks like a different style with a zipper in the front instead of side entry.