This will be my first projector, it's for a living room that is pretty well lit. I have two choices in projector. The first being 16:10 Native Aspect Ratio, 3400 Lumens, 20,000:1 Contrast Ratio. The second is 16:9 Native, 2500 Lumens, 13,000:1 Contrast Ratio. I also plan on buying an a screen...