Fucking fanboy.
Listen to grawk. They will both work just fine. Your best bet is to use each of them, and see which feels mroe comfortable. That will likely be the one that will give you a better image.
I have very big hands, and I found the Nikon to be uncomfortable for me. My RebelXT with battery grip is sufficient, but I would really like to move to a 30D/40D as it fits my hands even better.