The RC55 is a awesome camera! Very fast wake up. This camerawill not miss anything. It has a .20 trigger time an can take 5 photos in 6 seconds if you wish. Batteries last about 2 months or a little more during the summer time. Use rechargeables a must with this camera in cold weather or in the teens. Very water tight.

The RM45 is the same but has about a .10 trigger speed. It can take 2 photos a second. The biggest dislike is that the picture does not have near the details that the RC55 has becauseit has black an white photos.