The Optoma GT1080Darbee vs ViewSonic PA503W comparison proves that these projectors have many common features. Based on our rating, GT1080Darbee has a total rating of 6.6 out of 10 versus 6 for PA503W.
Advantages Optoma GT1080Darbee over ViewSonic PA503W
Bigger projection screen size: 45-303 inch vs 30-300 inch
Lower noise level, 30 dB vs 33 dB
3D support
Longer lamp life (normal mode): 5000 vs 4500 hours
More HDMI connectors: 2 vs 1
Advantages ViewSonic PA503W over Optoma GT1080Darbee