Having owned both I find the beartooths to feel way more stable. I struggled with rolling my ankles in the mountain extremes.I'm looking for a replacement for kenetrek mtn extremes. They've been ok but I don't like how it feels like I'm walking around with blocks underneath. Would anyone be able to comment about that on these beartooths. I need some decent ankle support, but the thick soles of the mtn extremes seem to encourage my ankle to roll.