Here, here! I quite like my slim, light, 200/2.8 L II, which I picked up for a very reasonable sum on Ebay this time last year.
I love the 2.8 L II as well. I can carry my camera around without any extra effort and even carry it around with me in my messenger bag when I may or may not need it. If I was lugging around the 2.0, I would need a caddy.