If you want pure opinion ... well my dad has the 9100 while I have the 6000 and ... well we've messed around a little and haven't noticed much difference. The biggest is probably the extra MegaPixels...
First I should say I am completely an amature photographer and for years I've used a Nikon F100 (pass on to me by my dad when he went digital). Now I loved this camera, but I usually end up...