After reading this post, I went to GC to try the P-121. I enjoyed it enough to play 90 minutes on it. Didn't like the P-45 sitting right next to it. Liked the 115 last year and not so much the 125. Personal preferences. The 121 might be right for me with the 73 keys and the inviting price. But I really need to hear it on the battlefield (battlefield being any place that's NOT the small "keyboard korner" that lives in most Guitar Centers.