The Epson PowerLite 680 vs BenQ TH671ST comparison proves that these projectors have many common features. Based on our rating, PowerLite 680 has a total rating of 6.6 out of 10 versus 7.3 for TH671ST.
Advantages Epson PowerLite 680 over BenQ TH671ST
Better brightness: 3500 vs 3000 lumens
Longer lamp life (normal mode): 5000 vs 4000 hours
More HDMI connectors: 3 vs 2
Advantages BenQ TH671ST over Epson PowerLite 680
Bigger projection screen size: 30-300 inch vs 55-100 inch