I have 1 of the older 1.3 and 1 of the newer 1.3 .Both have work fine so far with good batt life.You do have to creative in the setup and the mounting system just plane sucks. They both take good pic just not the highest quality.The 3.1 is supose to be faster at triggering and all the reviews I've read have been very good.Check out this site www.chasinggame.com for a reveiw.For the money I have one on my christmas list.