I have yet to find anything I love more than
Menzerna High Gloss Acrylic Shield. It's very slick and definitely adds to the shine. I love the secure feeling it gives me when I use it. I used to apply it solely every 3 weeks, and the paint beaded like crazy between applications (thx as well to Duragloss TP at detailing time). However, I realized I still needed a QD to finish off the car every car wash, so I use Eimann Fabrik Clear Pearl II on the panels and wheels, it does a very nice job, and I don't feel bad spraying it like crazy cause it's much much cheaper than the Menz. I don't really care how "good" the Eimann Fabrik spray is, which it is, because on the third wash, I still apply the Menz.