For years, I always liked the merrell Moabs both the low and high top version. Went with the goretex once and they were sweat boxes. I also have had some durability issues on my last two pair of Merrells and a bad customer service experience on the last one so, after a bit of research, I see some keens in my future.
For really, really ultralight, I think trail running shoes are the way to go. Solomon has been good to me.