I couldn't find anything on the different Express premixes. I skimmed through each premix to get an idea of what it did/did not include. I did not watch each step express in it's entirety, so I might have missed something. This is what I noted:
Step Express #1 = 42 mins (1-4 combos + all combo)
Step Express #2 = 37 mins (combos 1-4 only)
Step Express #3 = 40 mins (alternating between "all combo" & blast - repeated twice)
Step Express #4 = 32 mins (bonus step)
Step Express #5 = 41 mins (blast & bonus)
If anyone finds any discrepancies, please post it.