I have been using show room shine available from ebay. I saw the adverts for it on qvc and thought it was just hype as you use no water just a microfibre to polish on the sprayed wax and a clean microfibre cloth to take it off.
It really works you get no smears and can do it in full sunlight can polish and clean whole car in 15 mins and it does look like a show room car when done.
I dont use car washes or other polishes any more and it's so good my wife cleans our windows and patio doors with amazing speed and no smears any where. Well wort buying.
regards
Keith