1 - For lows, for rhytms, not leads.
2- A tone for highs, not meant for the low strings due to tone of "Grinding" on strngs (clip 3). Meant for Leads, not Rhythms.
3- Same type of distortion in clip 2, but for rhythm, "crunchy scratchy" tone, for Rhythms and Leads, mainly Leads.
4- Same as 3, but with lows, to make rhythms wihtout the "cracking" and "grinding" sounds, gives more of a fuller tone to the tone. For Rhythms
5- Is just a joke (;
Oppinions please (: