By popular request, Spoon Phillips compares 3 popular Martin Guitar body sizes. Here we have 3 guitars with identical specs except for their body sizes. All 3 are long-scale instruments with mahogany back & sides, sitka spruce tops, scalloped braces and cutaway bodies. We have the small OMC-18E, the medium GPC-18E and the large DC-18E. Which do you prefer & why? Please post your comments below.