I don't have that particular model , but I have the 1.3 mp and have been pretty satisfied with it so far . I have a rechargeable gel battery purchased from Sportsman's Guide for $10 , and a $20 solar recharge panel from Bass Pro for it , the regular lantern batteries just weren't enough . Here's an example pic from it:


Caught a pic of my self by accident while checking a dripper . LOL

The improvement that a 3.1 would impart should be noticeable . If it has the heat sensor it would definitely be worthwhile .