X10 Image Noise
The InFocus X10 does just fine in terms of image noise. Background image noise is modest - better than the average DLP, and comparable to most 3LCD home projectors. No issue at all with jaggies, and motion artifacts are handled well, response is pretty fast.
Bottom line on Image Noise - unless you encounter some content with a strange cadence (I don't test all the cadences, just the standard), the InFocus X10 does just fine here. Scratch this off your list of possible concerns.
InFocus X10: Other issues
There's one thing I've been noticing, and reporting on more of late, and that is whether the projector can sense the correct aspect ratio. I seem to find projectors fall into three categories:
1. Does nothing - leaves the aspect ratio where it was last set. If you were watcing in 16:9, and then put on something in 4:3, you'll need to manually switch the aspect ratio.
2. Attempts to adjust - as above, but will switch on its own, but with only some success. I do believe I've encountered projectors than can pick up on a change, when the source changes to one with a different aspect ratio, but most often they won't catch and adjust if you go from, say an HDTV channel to one with 4:3 aspect ratio, because it's the same source.