The LG PH550 vs Optoma HD142X comparison shows that these projectors have some important differences and common features. Based on our rating, PH550 has a total rating of 7.6 out of 10 versus 7.3 for HD142X.
Advantages LG PH550 over Optoma HD142X
Lower power consumption, 60 W vs 260 W
Longer lamp life (normal mode): 30000 vs 5000 hours
Stereo sound vs mono from integrated speakers
Advantages Optoma HD142X over LG PH550
Bigger projection screen size: 30-300 inch vs 25-100 inch