What brand/type of wax do people use on their Boxsters? I'm looking for something that's easy (like a spray wax), but will give me a great shine and good protection from sun and dirt (I live in Arizona and the summer sun is brutal). I was thinking of trying Mequiar's Tech Wax as I've used their Gold Class wax on other cars and it looks great. Any recommendations? Basically the easier and quicker it can put it on the more often I'll use it, especially when it's 110 degrees