I have used Moultrie, Stealth, DeerCam, and CamTrackers in the past, but now I am using a TrailMac Digital and I ain't looking back. I got my unit today and set it up this afternoon. I took a walk past the unit at a fast walk to see how fast it would trigger and sure enough, it got me in the center of the picture. I have messed around with these units before and can honestly say, this is the way to go if you have some extra cash.