We had a chance to test and compare two models: ViewSonic PA503W vs Optoma HD243X and this review should help people who are looking for a good projector. Based on our rating, PA503W has a total rating of 6 out of 10 versus 7.3 for HD243X.
Advantages ViewSonic PA503W over Optoma HD243X
Bigger projection screen size: 30-300 inch vs 28-301 inch
Better brightness: 3600 vs 3300 lumens
Lower power consumption, 260 W vs 300 W
Longer lamp life (normal mode): 4500 vs 3500 hours