All- I think I'm pretty old school when it comes to Oakleys. I really like the metal frames. I have a pair of Pennys, A-Wires, A-Wire 2.0 thicks, Juliets, and Magnesium M Frames. I'm not a fan of the plastic frames. What are some good metal frames still made today? I'm looking at the Carbon Blades - thoughts? What is the frame material on the Carbon Shift frames? Thanks.