Dilemma

I'm not sure whether I want to use either Piano(polyphony) or Piano Grand or mix up both sounds altogether for my Roland Juno-D. If I use Piano(polyphony), it will sound just like Lexington(Joey Pea-Pot With a Monkey Face). If I use Piano Grand, it will sound just like Intensity In Ten Cities. If I mix both sounds, pap! nothing similar to Chiodos' songs. Some say use polyphony, some also say use grand. I wanted to choose polyphony, but I did not trust my instincts. But I prefer grand compare to polyphony. Polyphony has this happy-go-lucky sound, you dig? On the other hand, Grand has this sad,moody,and mellow sound that relates to my feelings right now. haha. aihhh. The dilemma goes on and on..