I've worn the Lowas since 2000 and my first pair of Lowa Renegade Lo lasted 10 years. Wow! Since then they've change the sizing. At that time I wore a 6.5 but now it's a 7.5.
I prefer the Mids now because the Lo does not give the ankle support.
The only problem I have is deciding on the color!  The denim color was not as bright as shown in the ad, the purple is darker than I expected and I haven't seen the green or red. I'm really tired of the browns and blacks.
I have found these Renegades Mid to be the most comfortable boots in the hiking boot category. They are not stiff and I find my knees ache less when I wear them. I use superfeet for my insole. Expensive but worth it for the comfort.
Highly recommend the Mid Renegade in the GTX.