I've had both the model H (spruce & koa) and a OM/PW. They are both great guitars. I still have the OM and some visitation rights on the model H. I had used the model H in CGCGCD tuning as it really took the low C resonance well. My main, mostly picky I admit, objection was that the guitar sounded great un-capoed, but not as bright capoed. The OM/PW model sounds great overall, capoed, or not in a variety of tunings. I had a highlander SA mic installed and it sounds great with a PA or by itself.