Scott, Squeak:

4 functions can be controlled by the velocity: break, fill1,
fill2, start/stop.
The only disadvantage is that the control of velocity is saved in "global mode". The "global" is the place where all the higher functions of the pa80 are saved.
The global setting is superior on all others (styles, performances and sounds(programs)). There is one global for each set.
So, 1 set = 1 global + 3 user styles (16 styles each) + 160 performances + 3 user programs (64 each if I remember + drumkits).

So, for the velocity you have to choose between the 2 fills, the break and the start/stop function.

I usually have assign the fill1. Most of time this is enough for me.
Obviously you can have several sets, each with other global settings

With regard to the quality of fills, personnaly I have no problem whith them even if I admit that sometimes I ask myself which amateur created them. Here it is not a question of the quality of the fills themselves but of their integration in the style. Sometimes the timing is not good. However this concern a minority of styles. Most have good or at least sufficient good fills. And most of time you have absolutely no problem with them.
Break is ridiculous and useless for me.
Some bad fills and break are the two weak points on pa80.

Regards
STAM