If you can get a get the bushnell trophy cams on sale, I love mine. It is an older brown 5mp model. It is small, takes great photos, and the 8 aa batteries last all year and then some.
As mentioned earlier by digger, you can get primos truthcam35 refurbs on natchezss that are easy to use and take decent pictures. The downside is they are rather large, take 4 D batteries, and don't get the best battery life(usually ~2 weeks for me). I've got 3 of them and at ~$50 they are my go to for anywhere I think there is a chance my camera may grow legs.
whatever you decide to get, I would suggest formatting your sd card every time you put it in a camera. Make sure you format the card with the trail cam you are putting it in and not your computer. It really sucks to have a camera up for 3 weeks, and fine out there are no photos due to some kind of card error.