I got a Moultrie I40 last christmas and it has been great, I had it out all winter in many sub zero days and it was unbelievably easy on batteries. The IR saves enormously on battery life, not to mention puting it on 5 min. delay vs. 1min.
I also own the moultrie cam with the flash and I haven't had much luck with that thing at all. I got that thing 2 yrs. ago and still haven't figured out why it don't work right.