I like the Attacks for November hunts or colder days on Oct. For Sept and warm days in Oct I find them a little too warm. In Sept, I like the Tiburon pants better. If it gets cold (i.e. first light), then I'll throw on Kuiu's lightweight zip off merino long underwear. (Great product by the way, so easy to take off). I wear them for the first 30min to an hour at first light, then zip them off. After that I'm glad I have the cooler Tiburon pants the rest of the day. I'm generally hiking all day and staying active. I seem to run warm in general.
I found they are true to size in the waist, but are designed to be form fitting in the thighs. Their theory is tighter pants make less noise, which is true, but then the margin for error in sizing is smaller.