Composer ryan,
Try out this sample from the Roland Fantom (it is the first one of the 3 demo's). You will need Quick time for this however. It's not very long (a le Motif Video), but gives you a rough idea as to how an arpeggiater works. Notice that the Fantom can be zoned out to different parts of the keyboard.....and over 76 keys!. Not bad hey?.
Arpeggiater sample I wonder what the Roland VA7 sounds like in comparison to the Fantom... because they are both...err roland shall we say...
NR