Even though I would appreciate 25's portability, although the 49 is relatively portable enough, I hesitate buying the Key 25 because of the narrow range of keys. I am just beginning playing keyboard, so I'm not sure how much range the average keyboard player needs. I understand that the 25 has a button you can press to change octave, but it can give funny results especially if you finished pressing one key, change octaves, and the press the next note. The problem is that you will hear the previous note going up, something that would sound really bad. What do you think?