It makes sense comparing Optoma HD27e vs Optoma UHL55 because they both are able to give some premium features. Based on our rating, HD27e has a total rating of 7 out of 10 versus 9 for UHL55.
Advantages Optoma HD27e over Optoma UHL55
Bigger projection screen size: 30-300 inch vs 30-200 inch
Better brightness: 3400 vs 1500 lumens
Lower noise level, 27 dB vs 28 dB
Advantages Optoma UHL55 over Optoma HD27e
Bring the cinematic 4K UHD experience home with the UHL55
Lower power consumption, 170 W vs 330 W
UHL55 is HDR-compatible
Wireless connection enabled
Longer lamp life (normal mode): 20000 vs 3500 hours