Although you may find various pedals that do specific jobs, some that have dual purpose,(ie; I have a wah pedal that doubles as a volume foot cont.), the pedal I have that makes me happiest is the RP70 Modeling Guitar Prossessor. To start, it has a multi-led tuner, more accurate than my Crate 212 amp (on board). Then it has 16 different effects, all of which can be blended through 50 different preset channels or 50 more custom channels you mix and save/retrieve through comp. readout- (digital numbers). It' digital library also carries auto drums, which you control the beat volume and speed independant from the guitar modeling mode, yet plug one guitar in, and with stereo outs can be plugged into two amps. Set one amp to clean channel, the other with distortion and BAM! you have skyscraper sound that carries like Boston.It doesn't stop there, Then you can choose through the library for Many different footpedals (by name) and still better yet a Whole bunch of diff. amps (by name). All of this and then some at the touch of 2 f/p switches... for about $80.00. Crunch!