i have 2 moultrie i-40s and 3 bushnell trophy cams. One thing i noticed is that my moultries make a faint clicking noise everytime it takes a pic. The bushnells are 100% silent. With my moultires i usually only get 2 IR pics in a row of the same deer. With the bushnell I have had it take up to 20 continous pics of a deer before it went of the the detection area.