Help! I'm bewildered by the vast array of products out there. I can't wash my beautiful new M3 (oh how I love saying that) until the weekend, as the 3M clear bra needs to set. She will never go into any sort of car wash; I used to love washing and detailing my 325i so I am sure this will be a labor of love, and therapeutic besides (dont bother me! I'm washing the car!) But what should I use? I read the clay thread with great interest, so I'm sure clay will be on the list. What do you all recommend?