Hi there! I have the chance to buy either a Pentax 645D with the 55mm kit lens, or the Nikon D810 with the 24-70mm 2.8 zoom. Both options at the same price. Will the Nikon be a more reasonable choice right now, especially having in consideration that the Pentax is already 4 years old? I never shot medium format in digital, but the Kodak CCD sensor in the 645 appeals a lot to me. I already have a Pentax 645N with a couple of lenses (35, 75 and 150). I do mostly landscapes and portraits. Thanks a lot in advance for your input and advice. Best regards and Happy New Year! Baldomero