The Toshiba NHX21A has a maximum resolution of XGA (1024x768). That's 62% less resolution than a 1080p (1920x1080) data projector, which is the most frequently found resolution.
A XGA (1024x768) native projector resolution is actually the worst resolution across all projectors that have been around for around the same time as the NHX21A.
The best resolution across comparable types of projector is 1080p (1920x1080).
There are a number of alternative multimedia projectors that have a resolution of XGA (1024x768) which you might want to also look at including a higher Kagoo Rating™ product such as the ZX212ST, or the ZX210ST ($1,619.99) both from Optoma or the Vivitek D517.
If the resolution of this Toshiba data projector is not high enough for you then you might want to consider the SA560 (WXGA (1280x800 and higher rated) and higher rated), or the SA565 (WXGA (1280x800 and higher rated) and higher rated) both from LG or the Optoma ZW212ST (WXGA (1280x800 and higher rated) and higher rated).