Right now, on the pedalboard are:

Digitech WH-1 Whammy
Visual Sound Route 66
Boss OD-2r
Sobbat DB-1 Drivebreaker
Death By Audio Harmonic Transformer
Death By Audio "Supersonic Fuzz Gun"
Line 6 MM4 - Modulation modeler
Line 6 DL 4 - Delay Modeler
Line 6 Verbzilla
MultiEffects units can be as useful as individual pedals but they can be constricting too. You can get lots in one unit but the be tied to using an OD or Distortion that you are not so stoked about, because that is what the unit has in it. But such are the compromises of life.
What unit are you getting? the M13 has a lot of great effects/tones.