Would you like a D800s? (D600 sensor, D800 body and AF, 6ftg/s)

No, I don't

My only apprehensions regarding D600 and D800 are I want buy a camera that is for all the photos I'll do and supposed that:

• D800 produced huge files I will have always downsized (but Daniel has explained the more pixel the more "signal")
• The more Mpxl the more I could encounter problems with "not fast enough" shutter speeds  ... sorry, I cannot say better what I mean, my poor english ... I mean you, may be, can safely use 1/125sec with 105mm without any VR or tripod on D600 but yu cannot on D800. Using the same print size (i.e. 30 x 45 cm) supposed the more Mpxl the more "emphasis" to any lens or shooting error ...
• the AF coverage in D600 AF module is not enough to track moving subjects, preferring the use of D800 instead