The Benq MS517H has a maximum resolution of SVGA (800x600). That's 39% less resolution than a XGA (1024x768) projector, which is the most frequently found resolution.
A SVGA (800x600) projector native resolution is actually the worst resolution across all 13000:1 contrast ratio projectors that have been around for more than a year.
Across similar types of projector the best resolution is WXGA (1280x800).
What does "projector native resolution" mean?