My favorite is still Camden Yards. I really like TF and AT&T. I enjoyed the experience of Wrigley and Fenway, but purely as ballparks, they leave much to be desired. The history makes it worthwhile though, in a different way. Old Yankee Stadium was pretty awesome too, for similar reasons. I haven't been to Kaufman since the renovation, but I liked the pre-reno stadium a lot, so I can't wait to get back there. Personally, I found Safeco massively overrated.