I'm lazy and have better things to do than wax my car every 4 months so I use NuFinish. I last waxed my car over 1 year ago and the water still beads perfectly and the car gets driving in winter. It was rated by consumer reports to be one of the longest lasting waxes. It shines good enough for me, not sure if others produce "more shine" but I'm very happy with it. They really need to call it a wax because it is not a polish.
http://www.nufinish.com/products/car-polish