I guess I am on the opposite end of the spectrum to both of you...street/daily only. I have eibach pro-kit springs and koni's with rear subframe inserts/bushings. I live in Baltimore where the roads are...terrible to put it kindly.
I run full soft or quarter to half turn from full soft. At full soft, it is basically similar to stock, possibly better. Comfortable for daily commuting and city traffic, but a bit too soft for more spirited drives. Quarter turns do a lot more than you think (to me anyway), and at a quarter to half turn, it really sharpens up without being too harsh. I haven't gone any further than a full turn from soft...which is probably what I would stick with if the road surfaces around here was smoother and more predictable (crumbling asphalt, potholes, expansion joints, railroad tracks, etc.)
Hopefully this helps, it's nice to hear what others are running.
