A.No, we don't think that having fewer pads will place any particular restrictions or limitations on your performances.
When comparing the pads of the HPD-15 and HPD-10, you'll notice a difference in the number of small pads located around the perimeter of the upper half of each unit.
The HPD-15 has ten small pads (Pads B1-B5 and C1-C5), while the HPD-10 has five small pads (Pads S1-S5). As shown in the illustration below, two small pads on the HPD-15 occupy the same amount of space as one small pad on the HPD-10.

The remaining pads on both the HPD-15 and HPD-10 (A1-A5 and M1-M5) are the same size. The sensing functions (pressure and position sensors) are also the same.
Since the small pads of the HPD-10 are larger than those of the HPD-15, there is less chance that you will strike an adjacent pad by mistake, making the pads easier to play. The HPD-15's ten small pads allow for more complex and sophisticated performances.
(2006/03/30)