Not sure if you've bought a cam/
lens yet, but in case you haven't just my two cents.
I don't think anyone has brought this up but have you actually tried holding the cam your thinking about? When I was choosing my cam I was picking between a 600d and a 60d. Went with the 60 because it just felt more comfortable for me and I knew I could handle the weight.
Someone told me before that you should be comfortable with your cam, especially if your gonna be bringing it everywhere you go. If it's too big/small or heavy for you, you might just leave it at home cause it's not comfortable for you.