To increase your battery life with any camera that accepts AA batteries, go to Ultimate lithium. These are expensive but test 1.79 to 1.83 volt using a digital meter. These are ideal for cold weather use due to high voltage. Another good brand is Duracell Copper Top which test 1.60 volt.
As for cameras Moultrie has several good ones: D55-IR, D55XT, M80, M80XT, M100 and M880. I have all these versions and am happy with them. The only down fault is night time where pictures or videos can be blurry if the animal passes close to the camera. SpyPoint Black Flash is another good camera. I have the BF7 which is total black flash (undetected by the human eye, but will be detected by another trail camera when it triggers). The other camera shows it as a white flash. Good luck in your choice.