Hey, I'm finally upgrading to a new hd receiver. I'm picky and want to do the installation myself. I'm comfortable doing so and have done it for friends successfully. I don't want/need an installer to do it for me. I currently have a Dish 500. I'm in the Midwest and my local area receives both the eastern and western arcs. I want to use the western arc due to obstacles in the way of the eastern satellites. Am I better off using a 1000.2 or a 1000.4 for the western arc? What's the advantage/disadvantages? Does the .4 get a significantly better signal due to size of the dish? I want to use my 500 mast...do both fit on the 500 mast? Do either require struts? On Amazon, the .4 is considerably more expensive...about $110 shipped where the .2 is about $75 shipped. Is the additional money worth it? Thx for the help!