I would prefer a 73 key instrument much rather than a 61 key one. The pity is that Tyros 1 or 2 can easily accommodate the extra keys just by getting rid of the "cupholder" on the right of the keyboard. The weight of the instrument would not change, and most of the same case components could be reused. Other than that, I think T2 is a pretty complete instrument, though I'd like to have MP3 playback from the HD, and more polyphony - with Yamaha's propensity to use 4 notes of polyphony per note played, when using their better voices, the 128 is not so much. Also, a better, sunlight readable display would be great.