Possible Duplicate:
How do camera body motors compare to in-lens motors for focusing?
Can I save money on lenses by buying a Nikon camera with an in-body autofocus motor?
I would like to purchase a Nikon SLR camera mainly for general photography and specific wildlife photography. In reviews I find information about SLR cameras with in-body autofocus motors and without. At the same time we can use AF lenses with cameras that don't have an in-body motor.
Which are better; cameras with in-body motors or having a motor in the lens.