The highest resolution of the Benq TW519 is WXGA (1280x800). That's 30% more resolution than the most common native projector resolution of XGA (1024x768).
A WXGA (1280x800) native projector resolution is in fact the best resolution amongst all data projectors of a similar age and spec to the TW519.
A SVGA (800x600) native projector resolution is the worst resolution across comparable types of projector.
There are a number of other projectors that have a resolution of WXGA (1280x800) currently available which you might want to look at including the Benq TW523 which has a better Rating.