The highest resolution of the S1383WHne is WXGA (1280x800). That's 30% more resolution than a XGA (1024x768) projector, which is the most frequently found resolution.
A WXGA (1280x800) native projector resolution is in fact the best resolution amongst all projectors of this spec and age.
Amongst similar types of projector the worst resolution is SVGA (800x600).
There are a number of other data projectors that have a resolution of WXGA (1280x800) currently available that you might also want to look at including because of it's better review score, the MW665, the MX631ST, or the MW571 ($549.00) all from Benq.