I've got BF Goodrich G-Force Sports on my car right now - 225/45-17. All I've got to say is, WOW! Great tire. Check out the ratings on tirerack.com for more info. The're almost as grippy as the KDW-IIs, but have a much better treadwear rating & are more quiet and the ride is comfortable. I really expected it to be much more harsh.
I've broken them in, and have started to test their limits on the street, but I have yet to break them free on good pavement. Of course, this is south Florida, so lotsa good pavement laying around...