If you have the money, get a Red Witch Fuzz God II. I have one and it's amazing. Pure analog, true bypass, double gain and treble up switches, "Wrath" which varies from octave effects to crazy synth sounds depending on how far you turn the dial. If not, get yourself a Tubescreamer. Overyone uses it, so it has to be good. For Chorus, again, if you have the money, get a Red Witch, but if not get an Electro-Harmonix Small Clone. For added effect, combine it with a Small Stone, again from EHX. But make sure to look up Red Witch. Oh and one more thing, look up ZVex and Vexter. They're made buy this guy, Zach Vex, and the distortions and overdrives are amazing.