We had a chance to test and compare two models: LG PH550 vs Optoma HD27 and this review should help people who are looking for a good projector. Based on our rating, PH550 has a total rating of 7.6 out of 10 versus 7 for HD27.
Advantages LG PH550 over Optoma HD27
Lower power consumption, 60 W vs 260 W
Wireless connection enabled
Longer lamp life (normal mode): 30000 vs 5000 hours
Stereo sound vs mono from integrated speakers
Advantages Optoma HD27 over LG PH550
Bigger projection screen size: 30-300 inch vs 25-100 inch