Hello,
The 35-70mm (non-D) was the first AF lens I owned - bought it with my Nikon F4. GREAT lens.
The "D" is a non issue. In Nikon "D" means flash distance metering. I have owned and shot multiple lenses of both generations and there is little to no variation in quality or exposure when using them (flash or no flash). In my observation, it was primarly a marketing tool rather than a technological advance from Nikon. Otherwise, your lens and the one I refer to are identical.
"narsuitus" are you referring to the great little AFS lens? I agree that it is one of Nikon's best zooms in that range. Too bad they discontinued it. I bought one new when they first came out to shoot on my D2H and absolutely loved it - especially at a fraction of the price of it's big brother the 24-70mm, f/2.8 which it constantly was outperforming in tests.
The 35-70mm is an older design and the newer zooms probably are sharper and definately faster . That's not to say the older zoom isn't good. It is. Very good. Remember, it's a Nikkor. I doubt the Tamron is up to the same specs.
Good luck.