I upgraded my bike to disc brakes, got Avid 8" for the front ($90) and Avid 6" for the rears ($70). I paid $350 for my bruiser out the door add the $160 in brakes and few other parts, I'm at about $550 or less total into the bike.
I can post some pics up tomorrow of the bike and upgrades if you want too. It will be cool to have, the stock bruiser 1, bruiser2's beast and my upgraded rig.