If there are any,they will be heavy on the camera and the wallet me thinks.
the APO version of the Sigma is significantly better than the ordinary DG Macro
Is this the lens your refering too here?
Do they auto focus on a D40x?
I've seen the Nikon vr 70-300 on ebay brand new for £250, may well save a little longer for the Nikon lens
Thanks for all the advise so far
Darren
Thanks for all the replies.
Having read them all I decides to go for the Nikon 70-300 vr lens and brought a second hand one from kevshore
Really looking forward to trying it out when it arrives
Darren