Best wavelength for IR LEDs to be used with a hacked up IR camera?

So, I recently saw this question and thought it looked simple enough. Instead of a webcam though i used an actual (but old, 3MP) digital camera. The camera was a bit broken anyway(always exposed with weird colors and too dark usually). Well, I've confirmed the IR works now by holding my TV remote up to it. I don't actually have any IR LEDs on hand though.

The two prevalent kinds I see seem to be 950nm and 850nm. For the purposes of making a night vision camera, which one would be more bright? I would think 950nm because it's closer to the visible spectrum, but everyone else seems to say 850nm is brighter. So which one works better? Or should I just buy one of each and see for myself which one is brighter?(as in, it depends on the camera)

• Note that 850nm is closer to visible spectrum. Also, that won't matter as the CCD/CMOS pixels simply map intensity, regardless of wavelength. Color is determined by filtering. – tyblu Dec 12 '10 at 11:20
• Not true - all light sensors have some difference in sensitivity at different wavelengths. You'd normally expect wavelengths closer to visible to be better, however other factors like different LED efficiency and possible slight eye visibility may mean that 950nm is a better choice. LEDs are cheap - just buy both types and try it. – mikeselectricstuff Dec 12 '10 at 11:51
• Actually, yeah, buy both. – tyblu Dec 12 '10 at 11:54

EDIT:After seeing mikeselectricstuff's comment, I agree: buy both. Then upvote his comment.