I am thinking about getting one of these full frame cameras. I have been using the Canon 1V for the past 6 years. I have the following in Canon glass: 70-200 F/2.8, 24-70 F/2.8, 100-400 F/5.6, 20 F/2.8. I have been very satidfied with Canon. I waited to see how the new 5D MKII will be and at first it seems like I will continue with Canon. Then I heard that the 5D isn't as weather resistence as the 1V. It does not seem as well built as the 1V and is smaller than the 1V. I don't care about the video portion. I shoot only landsscape photos, mainly out west. So now I am thinking about the Nikon D700 but I have to invest a lot more money because I need to buy Nikon glass. I heard the D700 is better built than the 5D. Is more weather resistence. Has anybody been in the same position as I am and what did they decide to do and why? No Canon vs Nikon wars please.