I just found this forum while trying to do some research for a new pair of Oaks. Just got the Turbines, and also have the Radars. It all started with a pair of Big Square Wires. I wore those things till they were dead. I really wish I still had them, but they eventually got destroyed from everyday wear and I bent the frames beyond repair. But these new Turbines are awesome and light! And the flex in the arms means they aren't pinching my big head!