I would highly recommend the HCO Scoutguard SG550, Ive got two of them already and they are great cameras.In fact I am selling my third one that is brand new, never used.I would try to stay away from the 08' model Moultrie I40's they have gone backwards in quality with a slow 2-3 sec trigger and more whiteouts.. The Scoutguards are very quick trigger (around 1 sec), the size of a soda can, and operate on simple 8 AA batteries that are supposedly good for 2,000+ pics.

Here is a link to my Scoutguard SG550 on ebay if your interested let me know!

http://cgi.ebay.com/NEW-HCO-Scoutguard-SG550-Digital-Trail-Camera-STEM-Camo_W0QQitemZ110293488214QQcmdZViewItem?hash=item 110293488214&_trkparms=72%3A1205%7C39%3A1%7C66 %3A2%7C65%3A12%7C240%3A1318&_trksid=p3286.c0.m 14