It makes sense comparing Optoma HD29Darbee vs ViewSonic M1 because they both are able to give some premium features. Based on our rating, HD29Darbee has a total rating of 7 out of 10 versus 5.3 for M1.
Advantages Optoma HD29Darbee over ViewSonic M1
Bigger projection screen size: 30-300 inch vs 24-100 inch
Better brightness: 3200 vs 250 lumens
Lower noise level, 29 dB vs 32 dB
3D support
More HDMI connectors: 2 vs 1
Advantages ViewSonic M1 over Optoma HD29Darbee
Lower power consumption, 55 W vs 264 W
Longer lamp life (normal mode): 30000 vs 5000 hours