It makes sense comparing BenQ TK800M vs Optoma UHL55 because they both are able to give some premium features. Based on our rating, TK800M has a total rating of 7.6 out of 10 versus 9 for UHL55.
Advantages BenQ TK800M over Optoma UHL55
Bigger projection screen size: 30-300 inch vs 30-200 inch
Better brightness: 3000 vs 1500 lumens
Advantages Optoma UHL55 over BenQ TK800M
Lower noise level, 28 dB vs 33 dB
Lower power consumption, 170 W vs 330 W
Wireless connection enabled
Longer lamp life (normal mode): 20000 vs 4000 hours