In article aibAc.739462$Pk3.530185@pd7tw1no, W Chan
wrote:

hi, i am a new owner of nikon d-70 (body only).. and hv owned my f401 for
yrs.
i am shopping for zoom lenses... and wud like to hear about people's
comments on these 3 brands.. Nikkor, Sigma, and Tamron... thks/will

If you waste your money on anything but Nikon lenses, you will be
disappointed, especially if you go with Sigma.