buy a Moultrie I40 and don't worry about battery life
It would be more like saying "Buy a Moultrie I40 and worry about trigger speed" [&:]
And..that you would, I purchased an 08' I40 a week ago that I am currently selling, the trigger is no where near satisfactory in a $200 camera. I know the 07's are quicker but they are still at least 1.5-2sec
Overall the Scoutguard SG550's edge out the I40 (07 or 08).