Hi All - I just got a pair of Tailhooks in and just thought I'd share the differences between the two. They both carry the same frame of course, and it's the lens portion only that differs. I've had the Tailback from SGH for a couple months now. Anyone who doesn't know - there's an etching around the lenses to make it appear as if the frame goes the whole way around. Bottom line - they are both fantastic. I'm still on the fence about the TailHOOK on my particular face.... They may go up for sale soon... But I love the frames, and the flexibility and the nose cusions, and how very light they are. Hopefully these pics help anyone on the fence between the two. No matter what I still prefer the TailBACK on my face. **FYI the TailHOOK is the larger of the two.