I am no expert and don't even own one but have learned some about game cams. I have heard of many problems with various game cams from the guys using them in my hunt club. Battery life is short and apparently some of the cameras are failing after having been in the woods a while. I am guessing the electronics in the cameras are not designed to be turned on continuously and are failing. When the batteries go dead in the middle of the roll of film the entire roll is lost because it cannot be re-wound. The camera has to be opened thus destroying the film and all pictures on it.
Some of the better and newer brands should be much better quality. One thing is certain, they are a bundle of fun. The guys at my club get photos of big bucks, bears, and stuff that has never been seen before. They also get to see what is visiting their hunt sites after dark and when they are not around.
Considering the high cost of batteries, film, and developing, a digital would likely pay for itself in a season. $5 for roll of film plus $10 -$12 for developing, plus two trips to the developer add up to $20 or so every week. Wouldn't take long to pay the extra cost of a digital. The digital has many more features, better quality, much convenience, and the digital camera can be removed and used as a regular camera. Would be no question in my mind.
I think a battery save feature would be good whereas the camera brain goes to sleep when not in use. This may save the batteries and the camera electronics.
Good luck.
Dave1