Hey, and Welcome.
Didn't see this before, I've been using the Moultrie Mobile for nearly a year. Nothing but praise for the system and the Moultrie CS people.
If you have Cell Sig GET IT!
Just a couple ways it's helped me;
-Twice showed me that deer were in my spot as I hiked in. I hunted a different spot that morning, I would have blown them out and never known 'Where did all the deer go?'
-Had one of the cameras crap out on me. Night shots were total blackouts. Moultrie was able to see it also (images go to their servers). They sent me a new camera with return label. And since "it's out in the woods" they gave me about two weeks to get the busted one into the mail.
It couldn't be simpler, everything goes through Moultrie, not a separate Cell Plan Carrier. So, the Modem is about $199 and works with a bunch of their cameras. Monthly plan costs me about $15. You can adjust up or down based on how many pics you're getting. I save more then that in gas to check cameras in person.
I hope that helps, any other questions-fire away.