Bench one of these 3 running backs

So I have to choose two of the following 3 in a .5 ppr:
Sanders vs. Redskins (Howard ruled out)
Montgomery vs GB (great matchup but inconsistent)
Singletary vs Pitt (has been consistently good but very tough matchup)

I’ll add that I had Lamar and Ingram play Thursday and they score me 70 points. Looking for the high floor plays rather than boom or bust. I am playing the 1st place team though so I can’t lay an egg.

I’d play Sanders and Montgomery.