It makes sense comparing BenQ TK800M vs ViewSonic PX747-4K 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 7.3 for PX747-4K.
Advantages BenQ TK800M over ViewSonic PX747-4K
Bigger projection screen size: 30-300 inch vs 60-200 inch