I agree with Chris, you'll get 100's of pics of does and all kinds of wildlife placed over bait. Put the cam on a suspected trial of a big buck or a trail just off of the bait pile. A scrape works well once pre-rut hits.
If you ARE going to use the trail cam over a feeder or bait pile the Cuddy backs are good for that. Over a trial I use a Reconyx because of the super fast trigger and recovery speeds. Multiple picture bursts give you close to movie like pictures. Over a bait pile though, you'd have thousands of pictures to go through. It really depends on how you plan to use the camera.
The other decision is do you use an incandescent flash camera or an infrared camera? I found this article to be helpful for trail camera tips.
http://www.trophyhuntingobsession.com/3 ... l-cameras/Good luck and let us see any good pics you get.