I'm picking up a Jerez black e92 m3 on the 10th of sept. I think I'll flag this Guard X and clean and wax myself as its more of a weekend car. You think mothers/meguiars range is pretty good cause I was thinking of getting some stuff of the net.
I had a E46 M3 that I traded that had some type of paint protection that was ok, the guy i bought the car off said to get it done every year which I did but always thought it could look better. It always had water marks, bird sh*t and once an egg that always seems to damage the clear coat.