I'm pretty new to the game, but I love my GAUI 330x. I've seen them pick up that kind of payload, but its on the borderline. If you want to carry that kind of weight all the time maybe the 330x isnt big enuf even with the scorpion motor upgrade that I have.
Gaui 330x shown here with tail boom from a Shogun.
You could always get the 3 axis gyro, and build your own quad, using motors and controllers of your choice.
The gaui gyro will drive any quad you want to build with it. You could build a MONSTER!