hi i am rajoo from india interested in digital piano roland fp-5. can anybody advice me to sellect models from roland fp-5/f-100/yamahap-120/korg sp-300/ kawai es-3/ which is more better in sound and touch closser to accoustic grand. as i want for home/stage purpose.built in speaker needed/rhythum/practice function/.compare to above model which is best sellers in range us$ 1800/. regards.