Here is the disc brake synopsis on this board

Raiyn - avids bb7's
dirtbike - bling bling hopes - no one else can afford them but you might
Maelstrom - cheap out and get the juicy 5s or 7's
most people - get hayes hydros, proven and solid

Personally for djing I would go with v's or cheap mechs. There isn't much need for solid stopping in a rythm section