I have used several cameras over the years. I only use the cameras from September to December, and the cameras have the batteries removed at the end of season and cameras are stored in my basement. Its a good idea to remove the batteries when finished for the year. My sister had a cam ruined by batteries leaking.
Wildgame Innovations - I have bought two of these cameras over the years and neither one worked well. The worse cameras I have ever used. I had one not work right out of the box and the replacement wasn't much better. Constant photos of nothing but white during the daylight. Also, I found the menu setup and getting the camera up and running more difficult than other brands. Bottomline, I wouldn't bother taking a WGI camera to the woods if I was given one for free.
Primos - I have had decent luck with these cameras. I believe the models I have are the ultra 35. Both cameras worked great for the first 2 years and then they begin to not work after that. The most years I have gotten out of a primos camera has been 4 years. Decent picture, trigger speed, etc. No real complaints; just wish they would last longer.
Bushnell - I have had the best luck with bushnell (6 and 7mp). Pictures are great, trigger speed seems better than other cameras I have used. Very simple interface to get the camera up and running. I love the manual swith of "on/off". I only buy bushnell cameras now; very impressed.