Roger Cole
Subscriber
The Nightfox Cape is ~ $160 USD-- does not include headstrap. Uses AA batteries, will take rechargeables. I believe it's 720p.
Nightfox Swift is $199, higher res, but 850nm. with headstrap. Does not feature recording.
Nightfox Red is ~ $299-- includes headstrap, uses built-in rechargeable, and is 1920x1080p.
The Cape and the Red are 940nm, and both can record. The swift is kind of in between cost-wise. I went with the Red because... well... shiny!
All three require manual focus, and if you're planning on picking out sharp detail, they might not be the answer. After some testing in my planned darkroom, the IR emitters, even at low power, produce glare, so I found an inexpensive IR only flashlight that I'll mount on a stand to give me indirect lighting, and that works much better. The different levels of IR power basically control how far you can see-- they don't affect the brightness much, due to the system auto-adjusting.
I've finally got everything together, I'm hoping to try it out this weekend.
Thanks, I'll be very curious how it works out for you. Let us know!