Those who have used these two cameras, which one do you think is better in terms of build quality? I`ve used an F-1 before and although it`s a well built camera, my copy had some weak parts such as the film advance lever, bottom plate, and the prism/finder. These parts were somewhat loose, especially the vertical play in the film advance lever was irritating. I`m now considering to buy another f-1 body and I need to decide if I should get another f-1 or go with a new f-1. Feature-wise, both cameras suit me well, so the decision comes down to the build quality.