We had a chance to test and compare two models: Optoma HD27HDR vs Optoma HD27 and this review should help people who are looking for a good projector. Based on our rating, HD27HDR has a total rating of 8 out of 10 versus 7 for HD27.
Advantages Optoma HD27HDR over Optoma HD27
Bigger projection screen size: 28-305 inch vs 30-300 inch
Better brightness: 3400 vs 3200 lumens
Lower power consumption, 236 W vs 260 W
HD27HDR is HDR-compatible
Longer lamp life (normal mode): 6000 vs 5000 hours