It makes sense comparing Optoma GT1080Darbee vs ViewSonic M1 because they both are able to give some premium features. Based on our rating, GT1080Darbee has a total rating of 6.6 out of 10 versus 5.3 for M1.
Advantages Optoma GT1080Darbee over ViewSonic M1
Bigger projection screen size: 45-303 inch vs 24-100 inch
Better brightness: 3000 vs 250 lumens
Lower noise level, 30 dB vs 32 dB
3D support
More HDMI connectors: 2 vs 1
Advantages ViewSonic M1 over Optoma GT1080Darbee
Lower power consumption, 55 W vs 262 W
Longer lamp life (normal mode): 30000 vs 5000 hours