It makes sense comparing BenQ W1080ST vs Optoma UHL55 because they both are able to give some premium features. Based on our rating, W1080ST has a total rating of 6.6 out of 10 versus 9 for UHL55.
Advantages BenQ W1080ST over Optoma UHL55
Bigger projection screen size: 38-300 inch vs 30-200 inch
Better brightness: 2000 vs 1500 lumens
Advantages Optoma UHL55 over BenQ W1080ST
Bring the cinematic 4K UHD experience home with the UHL55
Lower noise level, 28 dB vs 33 dB
Lower power consumption, 170 W vs 353 W
UHL55 is HDR-compatible
Wireless connection enabled
Longer lamp life (normal mode): 20000 vs 3500 hours