The Benq MS507H has a maximum resolution of SVGA (800x600). That's 39% less resolution than the most common native projector resolution of XGA (1024x768).
This multimedia projector's resolution (SVGA (800x600)) is actually the worst resolution across all comparable spec multimedia projectors that are older than two years.
The best resolution amongst similar types of multimedia projector is WXGA (1280x800).
Other projectors that have a resolution of SVGA (800x600) that you might want to also look at include a higher Kagoo Rating™ multimedia projector such as the Optoma DS330 (£242.98).
Projectors with a higher resolution that might be worth considering include the DX330 (XGA (1024x768)), or the DX325 (£310.14) (XGA (1024x768)) both from Optoma or the Acer P1276 (£532.04) (XGA (1024x768)).