Been using an Evola T20 off ebay with Photons and Pulsar Digisights for a while.
At under 50 bux, it's the best bang for the buck and wakes them up to further than I need to shoot at night.
I also have Streamlight and Sightmark for comparison.
I use sightmark (805nm) on Gen1/2 hand scanners but also use it with Photon and Pulsar.
The Evola (850nm) is my go-to unit.
The Streamlight (850nm) is a very bright, long range illuminator that is too powerful for close use but lights up the world at 300 yards with digital sights.
I only include the torch/flashlight as it is 940nm and in invisible range but it is pretty weak and only good for about 40-50 yards.
I have seen some UniqueFire 1508 IR LED 940NM T50 illuminators just pop up on ebay in the 40.00 range that look like high power 940nm illuminators that are in the invisible range and really works well with most digital stuff.
Going to get one of those as soon as I have some disposable cash in ebay!
From left to right: Sightmark, Evola, Streamlight, Torch with 940nm pellet.
This is a picture of the UniqueFire from ebay.
It is 940nm, has 3 modes and adjustable focus - sounds like a winner to me!
It takes two 18650 batteries so it's 8-10 inches long.