In the competitive 5'3" grand piano market, choosing between the  Ritmüller R9 and the Kawai GL-20 and the  often comes down to a choice between modern innovation and a "boutique" tonal soul. While the Kawai is famous for its high-tech Millennium III carbon-fiber action and clean, Japanese precision, the Ritmüller R9 designed by European master Lothar Thomma—aims for a warmer, more lyrical performance.