Can anyone comment on the differences...
Can anyone comment on the differences between the newest Quark and the last iteration, circa 2010.
Not often is there such a drastic change in equipment that the same product name is kept. The older Quarks are about 100g heavier w/ hammers and approximately 150g heavier when you remove the hammers from the new model. Additionally, you can remove the adze/hammer on the newer models. The newer Quarks also have a secondary pinky rest that allow for multiple grip positions which allow the tool to perform significantly better on technical ice/mixed lines and on alpine snow couloirs (the larger spike hole also facilitates easier clipping of a stretch leash system, such as the Black Diamond Spinner Leash). Lastly, the new pick is slightly more downturned (about 2 degrees) allowing easier swings in steeper terrain and more purchase on mixed lines.