With My D300 I haulded all the options I use in to the custom menu, It saves alot of time and button pressing.
THe Nikon 85mm f1.4 is in my opition the best lens that nikon make.
I have not used the 105mm f2 DC, I've seen some stunning shots taken with it. but I've heard it suffers from inaccurate autofocus, Again I'm only telling you what my freind who owned one told me!
Stuart