The highest resolution of the Canon 0910C005 is XGA (1024x768). That's 23% less resolution than the most frequently found native projector resolution of WXGA (1280x800).
An XGA (1024x768) native projector resolution is in fact the worst resolution across all similar spec projectors that have been around for a comparable time to the 0910C005.
A WUXGA (1920x1200) native projector resolution is the best resolution across similar types of projector.
It may also be worth considering one of the alternative projectors that have a resolution of XGA (1024x768) currently available including the Hitachi CPX2541WN (£368.12), or the Canon X320 (£349.26) which is cheaper.
If the resolution of this data projector is too low for you then you might also want to consider the Canon LV-WX320 (£365.16) (WXGA (1280x800)) which is also cheaper.