I have the Moultrie that was $129. I am very pleased with it. I bought it to do small seeds but have used it for everything. I would have to look and see what the more expensive one offers but I doubt you need it.
I have the cheaper Moultrie that I got from Cabalas. One thing I don't like is there is no agitator and there is no cone slope directing the seed to the hole as the seed bin bottom is flat. But it works good otherwise, as it has saved these old bones a lot of walking and cranking, on the two acres I plot. You probably want something a little better for 13 acres.