My hobby is photography:
If you had the XTI with the Tamron lens 17-50 and 28-300 for 1 year (my favor forms of picture taking is low-light (Big Ben in London and Eiffel Tower at sunset), sports (soccer/football day or night) and portraits.
Would you exchange the XTI body for the 40D body or stay with the XTI?
Is the 40D truly an upgrade from the XTI??
Thank you for the advice.