I can't speak too much from experience since I've only had one trailcam, but I love my leaf river IR-5. My girlfriend bought it for me last christmas and it has probably taken around 2000 pictures. Its been running none stop since then and I've only changed the batteries out once. It has a built in viewing screen, and can also record video and sound. You should look into it, I know that I'll have at least one or two more by the time hunting season rolls back around.
Here's a couple of pics it has taken
http://i628.photobucket.com/albums/uu8/socoz71/FILE0219.jpg
http://i628.photobucket.com/albums/uu8/socoz71/FILE0205.jpg