Buying a Digital SLR Camera

At the moment I am looking at buying my first digital SLR camera.  I've been looking at a few and there are two major contenders.  The first is the Nikon D80 while the second is the Canon 40D.  They are both excellent cameras with many excellent features.  At the moment I'm still trying to choose between them.  I want a digital SLR so that I can take more varied photographs including macro.  I went and had a look at both cameras today.  The Nikon is easier to use but the Canon has a better lens choice.  Now I've seen them I will cogitate and hopefully come to a decision.