i'am buy no means an exp detailer, just somebody who wants to take care of his daily driven vehicles as much as p[ossible. here is my observation on what i found out last night topping my zaino w/ p21s. simply stated it was a huge difference.(great depth and wettness). i tend to agree w/ the ones that say zaino is a little to plasticky, but excellent on the durability factor. anyway some say not to top w/ zaino (especially go old sal) but i tell u what i'm glad i did. it doesen't seem to have any ill effects yet and probably won't, will it eventually eat through the zaino? dont know dont care.....on like butter and off w/ ease...no stupid step processes and waiting for it to bond...yes i know about zfx...again all i can say is WOW!!!!! sorry no pic's no dig. camera you'll just have to improvise...