It makes sense comparing ViewSonic M1 vs Optoma UHL55 because they both are able to give some premium features. Based on our rating, M1 has a total rating of 5.3 out of 10 versus 9 for UHL55.
Advantages ViewSonic M1 over Optoma UHL55
Lower power consumption, 55 W vs 170 W
Longer lamp life (normal mode): 30000 vs 20000 hours
Advantages Optoma UHL55 over ViewSonic M1
Bring the cinematic 4K UHD experience home with the UHL55
Bigger projection screen size: 30-200 inch vs 24-100 inch