i bought a couple of these on the initial drop. i use them, and overall they're handy but they have a major problem: as you use the keys, the screws are always loosening, requiring you to regularly and frequently re-tighten them. otherwise you end up with a pocket full of keys and key-smart screws and pieces. i was hoping "2.0" meant something was done to fix this, and if so i was ready to buy. unfortunately, "2.0" is just cosmetics. [you can say titanium is lighter, but it's an insignificant difference for objects of this size.]