I have 3 Moultrie game spy 2.1's. Got them from walmart for 99.00 each I think. They work well for the money. Triggers a bit slow, but if you place the camera right, you can compensate for that delay. ( Don;t place them toooo close to the area you are expecting the deer to be in. Back them up a few feet from where you might normally place them. ) But if I wanted to spend a little more I would love to have a no flash unit ( s ). I think they spook the deer less, but that is more money andI see plenty of deer on the cameras and on my stands, even with the flash units, but could I see more, or bigger bucks if they were infra red? Who knows? But for the money .... go with the Moultrie and get the SD memory card to go in it. I have a 1 gig card in each one and if you look around you can find them on sale usually. I got mine from office depot on sale for 20.00 each. I also bought 3 rechargable 6v batteries and 3 solar chargers to hook up to them to keep them charged. Well worth the investment.