RE: which camera
the i450 is more like $139 and also has a $20 rebate. the v450 is the one w/ the screen.
Personally, I wouldn't pay for the screen. there are other ways of looking at pictures in the field - the built in viewer in the long run is far more expensive (especially if you get multiple cams)
Itried both the new moultrie and the i450. the i450 is much better!