It makes sense comparing VAVA 4K vs Optoma HD131Xe because they both are able to give some premium features. Based on our rating, 4K has a total rating of 9 out of 10 versus 6.6 for HD131Xe.
Advantages VAVA 4K over Optoma HD131Xe
Bring the cinematic 4K UHD experience home with the 4K
Better brightness: 6000 vs 2500 lumens
4K is HDR-compatible
Wireless connection enabled
Longer lamp life (normal mode): 25000 vs 3500 hours
More HDMI connectors: 3 vs 2
Stereo sound vs mono from integrated speakers
Advantages Optoma HD131Xe over VAVA 4K
Bigger projection screen size: 38-301 inch vs 80-150 inch