It makes sense comparing Optoma ML750 vs Nebula Mars II because they both are able to give some premium features. Based on our rating, ML750 has a total rating of 5.6 out of 10 versus 6.6 for Mars II.
Advantages Optoma ML750 over Nebula Mars II
Better brightness: 700 vs 300 lumens
Lower noise level, 30 dB vs 32 dB
3D support
Advantages Nebula Mars II over Optoma ML750
Bigger projection screen size: 30-150 inch vs 17-100 inch