It makes sense comparing Optoma HD131Xe vs ViewSonic M1 because they both are able to give some premium features. Based on our rating, HD131Xe has a total rating of 6.6 out of 10 versus 5.3 for M1.
Advantages Optoma HD131Xe over ViewSonic M1
Bigger projection screen size: 38-301 inch vs 24-100 inch
Better brightness: 2500 vs 250 lumens
Lower noise level, 26 dB vs 32 dB
3D support
More HDMI connectors: 2 vs 1
Advantages ViewSonic M1 over Optoma HD131Xe
Lower power consumption, 55 W vs 262 W
Longer lamp life (normal mode): 30000 vs 3500 hours