The T-Rex Mudhoney II has two channels of vintage gain, so you can easily switch between a clean sound from your amp, a nice edgy overdrive from the one Mudhoney channel and a thick warm distortion from the other channel.
The PiggyFX Black Pig High Gain Distortion Pedal is raw distortion coupled with a 3 band active EQ section that delivers anything from modern hi gain to squealing metallic tones.
The Pigtronix Philosopher King Synthesizer Pedal takes tone several steps further with a full set of ADSR controls including hold level, release time, one-shot mode, selectable auto reset, and expression pedals for swell and fade times.