It makes sense comparing Epson 3100 vs ViewSonic M1 because they both are able to give some premium features. Based on our rating, 3100 has a total rating of 7 out of 10 versus 5.3 for M1.
Advantages Epson 3100 over ViewSonic M1
Bigger projection screen size: 40-200 inch vs 24-100 inch
Better brightness: 2600 vs 250 lumens
Lower noise level, 24 dB vs 32 dB
3D support
More HDMI connectors: 2 vs 1
Advantages ViewSonic M1 over Epson 3100
Lower power consumption, 55 W vs 356 W
Longer lamp life (normal mode): 30000 vs 3500 hours