Trailer Brake controller

[ticopowell]

So now that I am all graduated, I decided that it would be a great investment to buy a trailer... that way the air force pays me to move instead of me worrying about them breaking stuff as they move it for me... and I now need a trailer brake. I have found that at orieley and autozone they have ones for $60-$80, also the place I got the trailer from has one for $80. Amazon sells the p3 for about $150-$160, and other ones for cheaper. so with my new trailer, it is a dual axle 7000# max weight 7 foot tall 16x7 trailer with a v-nose, and with my future use of it (worst case, I use it to help people move, best case is I use it once every 3 years when the air force thinks I should change bases), is it worth getting the p3, or should I go for the voyager or the p2 or one of the other off name brands?
Thanks for all the replies!