We had a chance to test and compare two models: Epson Pro EX9220 vs Optoma HD27 and this review should help people who are looking for a good projector. Based on our rating, Pro EX9220 has a total rating of 7.3 out of 10 versus 7 for HD27.
Advantages Epson Pro EX9220 over Optoma HD27
Bigger projection screen size: 34-435 inch vs 30-300 inch
Better brightness: 3600 vs 3200 lumens
Wireless connection enabled
Longer lamp life (normal mode): 6000 vs 5000 hours