Hi! I am currently own a D7000 with couple of DX lens and Nikon Speedlight. Thinking to upgrade to full frame D810 but worried the Nikon quality issues. Is any of new D810 user willing to share their experiences? Any issue you are facing? I am also planning to purchase 24-70mm f2.8 (non-VR) & 70-200mm f2.8, please feel free to share your opinion. Thank you.