I used the Nanoskin and loved it. Cut down the claying process by 80%. I didn't know that it did not pick up 100% of the contaminant. After the Nanoskin, the paint feel very smooth to touch.
2011 E92, mineral white/red interior, sport, navi, premium, CA. Current mods: 15% ceramic tint, black grills, painted reflectors, wrapped side mirrors and front blades, HID fogs, Forestar F14, KW Street Comfort