It makes sense comparing ViewSonic PRO7827HD vs Optoma UHL55 because they both are able to give some premium features. Based on our rating, PRO7827HD has a total rating of 7 out of 10 versus 9 for UHL55.
Advantages ViewSonic PRO7827HD over Optoma UHL55
Bigger projection screen size: 30-300 inch vs 30-200 inch
Better brightness: 2200 vs 1500 lumens
More HDMI connectors: 3 vs 2
Advantages Optoma UHL55 over ViewSonic PRO7827HD
Bring the cinematic 4K UHD experience home with the UHL55
Lower noise level, 28 dB vs 34 dB
Lower power consumption, 170 W vs 350 W
UHL55 is HDR-compatible
Wireless connection enabled
Longer lamp life (normal mode): 20000 vs 3500 hours