I am getting ready to buy into a medium format digital system. I do not shoot professionally but i am very serious about shooting. What factors should one consider when comparing phase one vs leaf backs. I shoot primarily landscape, some macro, very rare studio/portraits. I will be looking at a mamiya mount and down the road i would like a technical camera. I am considering a phase one P65+ or a leaf aptus II 10, but will look for demos to save some cash.