It makes sense comparing LG PH550 vs Nebula Mars II because they both are able to give some premium features. Based on our rating, PH550 has a total rating of 7.6 out of 10 versus 6.6 for Mars II.
Advantages LG PH550 over Nebula Mars II
Better brightness: 550 vs 300 lumens
3D support
Advantages Nebula Mars II over LG PH550
Bigger projection screen size: 30-150 inch vs 25-100 inch