I love my Chaco's! I've been wearing Z/2's since 2002. I'm a climbing and paddling guide so I spend a substantial amount of time in sandals and outside. I've had the Z/2 with the unaweep sole for a year and they're great, they're super comfy, and super secure on the foot. I'm ot a huge fan of the unaweep sole, it's great for hiking and general around town use, but I've had a couple of times that I've slipped on slightly damp rock. They also don't stick to dry rock nearly as well as the stealth sole (haven't tried the pro sole yet). They are great for walking, I climbed mt elbert, tallest mountain in CO last september, 12 miles round trip and my feet didn't even flinch in my chaco's, way more comfortable and lighter than hiking boots.