Looking to purchase a full frame camera for Landscape and occasional Portraits. I currently own a Mark IIn & Mark III and love the pro bodies which pushes me towards a 1Ds Mark II. I'm really not interested in the video function but the file size and IQ of the 5D Mark II make it very interesting. I do plan to print large (at least 24 x 36). Which body would you choose and why? Thanks in advance for any and all input.