just bought a car, its a 20 year old 230TE, a white one. from a distance it looked like it just needed a wash.. well after washing several times, i think it may need a little more. So i am trying to get a buffer. must i use the megs or the other brands, can I start off with autoglym paint renovator , and then the resin polish and seal it off with a collinite, all with a buffer. or for that matter by hand. watch out popeye here i come!