Burton is not highly overpriced. It is just overpriced. And that's only speaking of current year models. The Joystick is an excellent board. It's a beefed up Hero which is another killer stick.
Ride DH2 is also a really solid stick. Stiffer than the Joystick and great all-mountain board. Really good for park jumps, but not as good for jibbing. This is easily in the top 3 of the poppiest boards.
One Magtek will be too much board for you to handle. You are learning correct? It's stiff and fast. Also, it is not a park board. It's purely all-mountain. Did I mention that it is stiff? Excellent for maching down any run though.
The Parkstar or Machete (not on your list) is going to be your best choices in my opinion. Machete is a little stiffer but both are medium flex with the Parkstar favoring the softer side of medium. Both are killer in the park and decent jib boards. The Machete is a better all-mountain ride than the Parkstar while the latter is better at jibs. Machete is the better jump board.