I'm kinda simple with my pedals, so I'm gonna throw in a vote for the Boss ME-50B (think its the 70B now?!). Largely set out like an analogue pedal (there is a digital element for programming, but I never use it). Three pedal sections with around 10 FX per section, so you can layer three different effects at one time. Plus the expression pedal can be switched between volume, wah, resonance (my fave choice), +1/-1 Octave (whammy style), and the rather un-useable options of 'hold note' and kick drum...ignore those two
I love mine anyway
Si